occipito-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.

Forms: before a vowel also occipit-.

Origin: A borrowing from Latin. Etymons: Latin occipito-, occiput.

Etymology: < post-classical Latin occipito-, combining form (in occipito-frontalis occipitofrontalis n.) of classical Latin occiput occiput n. Compare French occipito- (formations in which are apparently found from the 18th cent.: see occipito-frontal occipitofrontal adj.).Apparently earliest in the Latin loan occipitofrontalis n. Formations within English are found from the early 19th cent.

Chiefly Anatomy and Obstetrics.

Forming chiefly adjectives expressing a connection or relationship between the occiput, or occipital bone, lobe, etc., and another part; (spec. in Obstetrics) forming adjectives relating the position of the fetal occiput to the maternal pelvis, and designating diameters of the fetal head.

† occipito-angular adj. Obsolete rare relating to the occipital lobe and the angular gyrus.

ΚΠ

1883–4 Proc. Royal Soc. 36 222 The lesions are classified according to their position in the occipito-angular, temporal, Rolandic, frontal, and hippocampal regions respectively.

1898 Philos. Trans. (Royal Soc.) B. 190 11 A corticipetal system, passing from the external geniculate body and pulvinar thalami to the cortex of the occipito-angular region.

1909 Philos. Trans. (Royal Soc.) B. 200 126 Owing to the development of a large occipito-angular annectent gyrus.

occipitoanterior adj.

Brit.

/ɒkˌsɪpᵻtəʊanˈtɪərɪə/

/əkˌsɪpᵻtəʊanˈtɪərɪə/

U.S.

/ɑkˌsɪpᵻdoʊˌænˈtɪriər/

[after French occipito-antérieur (1829 in the passage translated in quot. 1831)] Obstetrics designating a type of cephalic presentation in which the fetal occiput is directed towards the anterior half of the mother's pelvis (usually towards the left or right acetabulum).

ΚΠ

1831 C. D. Meigs tr. A. A. L. M. Velpeau Elem. Treat. Midwifery v. 290 The English accoucheurs..bestow the title of natural labour only upon the occipito-anterior position, while according to them, the occipito-posterior position belongs to the class of preternatural labour.

1908 Practitioner Feb. 213 Harman, in examining the records of the Belgrave Hospital, found, out of 10 cases, that the left eye was affected in 9, which he attributed to the child usually being born in the left occipito anterior position of the head.

2000 Obstetr. & Gynecol. 96 749 There was a higher incidence of instrument and emergency cesarean deliveries in occipitoposterior compared with occipitoanterior labors.

occipitoatlantal adj.

Brit.

/ɒkˌsɪpᵻtəʊətˈlantl/

/əkˌsɪpᵻtəʊətˈlantl/

U.S.

/ɑkˌsɪpᵻdoʊətˈlæn(t)l/

of or relating to the occiput and the atlas (first cervical vertebra).

ΚΠ

1831 R. Knox tr. H. Cloquet Syst. Human Anat. (ed. 2) 178 Anterior Occipito-Atlantal Ligament.

1878–9 Proc. Royal Soc. 28 331 In the Selachians, however, it [sc. the head] is well developed, and in them the distinction between head and body by means of the occipito-atlantal articulation is late.

1909 Philos. Trans. (Royal Soc.) B. 200 414 There are a number of veins or sinuses in or about the occipito-atlantal membrane and above the supra-occipital bone.

1998 Jrnl. Neurosurg. 88 773 Because of the craniocervical ligament injury and the slight anterior occipitoatlantal dislocation, the lesion was considered to be unstable and was treated successfully with a cervical collar.

occipito-atloid adj.

Brit.

/ɒkˌsɪpᵻtəʊˈatlɔɪd/

/əkˌsɪpᵻtəʊˈatlɔɪd/

U.S.

/ɑkˌsɪpᵻdoʊˈætˌlɔɪd/

rare = occipitoatlantal adj.

ΚΠ

1833 R. Dunglison New Dict. Med. Sci. II. 97/1 Occipito-atloid articulation is the articulation of the condyles of the occipital bone with the superior articular cavities of the atlas.

1913 Cunningham's Text-bk. Anat. (ed. 4) 310 The membrana atlanto-occipitalis anterior (anterior occipito-atloid membrane).

1989 Jrnl. Neurosurg. Sci. 33 197 The authors have found the Gilles Bertrand intra-articular C/1-C/2 bilateral arthrodesis to be an extremely efficient surgical procedure for stabilizing the occipito-atlo-axial region, producing a relative lowering of the odontoid and relieving pressure in the occipito-atloid region.

† occipito-atloidal adj. [after French occipito-atloïdien (1816 in the passage translated in quot. 1828)] Obsolete rare = occipitoatlantal adj.

ΚΠ

1828 R. Knox tr. H. Cloquet Syst. Human Anat. 185 Anterior occipito-atloidal ligament.

occipitoaxial adj.

Brit.

/ɒkˌsɪpᵻtəʊˈaksɪəl/

/əkˌsɪpᵻtəʊˈaksɪəl/

U.S.

/ɑkˌsɪpᵻdoʊˈæksiəl/

of or relating to the occiput and the axis (second cervical vertebra).

ΚΠ

1890 Cent. Dict. Occipito-axial, pertaining to the occipital bone and to the axis or second cervical vertebra: applied to ligaments which are also called the apparatus ligamentosus colli.

1983 Jrnl. Anat. 136 181 Part X may project into the foramen magnum and form an occipito-axial joint.

2000 Spine 25 2133 In both cases laminoplasty of the cervical spine was performed with occipitoaxial arthrodesis.

† occipito-axoid adj. Obsolete = occipitoaxial adj.

ΚΠ

1833 R. Dunglison New Dict. Med. Sci. II. 97/1 Occipito-axoid Articulation is the connexion of the occipital bone with the axis or second vertebra.

1862 Gray's Anat. (U.S. ed. 2) xxxii. 188 The Posterior Common Ligament is situated within the spinal canal, and extends along the posterior surface of the bodies of the vertebræ, from the body of the axis above, where it is continuous with the occipito-axoid ligament, to the sacrum below.

† occipito-axoidal adj. [after French occipito-axoïdien (1816 in the passage translated in quot. 1828)] Obsolete rare = occipitoaxial adj.

ΚΠ

1828 R. Knox tr. H. Cloquet Syst. Human Anat. 186 Occipito-axoidal ligament. This ligament is not admitted by many authors, who speak of it as a prolongation of the common posterior verterbral ligament.

occipitohyoid adj.

Brit.

/ɒkˌsɪpᵻtə(ʊ)ˈhʌɪɔɪd/

/əkˌsɪpᵻtə(ʊ)ˈhʌɪɔɪd/

U.S.

/ɑkˌsɪpᵻdoʊˈhaɪˌɔɪd/

rare of or relating to the occipital and the hyoid bones.

ΚΠ

1855–60 Rep. Explor. & Surveys (U.S. War Dept.) 188 The head is of but moderate development, it being contained four times and a half in the total length; it is a little deeper than long upon the line of its greatest depth, which is the occipito-hyoid.

1892 New Sydenham Soc. Lexicon Occipito-hyoid muscle, an occasional muscle arising from the occipital bone and inserted into the hyoid bone.

occipitomastoid adj.

Brit.

/ɒkˌsɪpᵻtə(ʊ)ˈmastɔɪd/

/əkˌsɪpᵻtə(ʊ)ˈmastɔɪd/

U.S.

/ɑkˌsɪpᵻdoʊˈmæˌstɔɪd/

of relating to the occipital and mastoid bones.

ΚΠ

1855 L. Holden Human Osteol. 93 The ‘occipito-mastoid suture’..connects the occipital with the mastoid portion of the temporal bone.

1905 Jrnl. Anthropol. Inst. 35 37 A careful review of our records makes us believe that obliteration generally begins about midway between the lambda and the occipito-mastoid articulation, and that the upper part of the lambda closes last.

1980 Gray's Anat. (ed. 36) iii. 301/2 Inferiorly it [sc. the lambdoid suture] meets the occipitomastoid and parietomastoid sutures at the postero-inferior angle of the parietal bone.

1992 Current Anthropol. 33 541/2 Clear contrasts include..occipito-mastoid morphology.

occipitomental adj.

Brit.

/ɒkˌsɪpᵻtə(ʊ)ˈmɛntl/

/əkˌsɪpᵻtə(ʊ)ˈmɛntl/

U.S.

/ɑkˌsɪpᵻdoʊˈmɛn(t)l/

[ < occipito- comb. form + mental adj.²; compare French occipito-mentonnier (1829)] of or relating to the occiput and the chin; (spec. in Obstetrics) designating the diameter of the fetal skull measured from the occiput to the tip of the chin.

ΚΠ

1831 C. D. Meigs tr. A. A. L. M. Velpeau Elem. Treat. Midwifery iv. 202 The occipito-mental, or great circumference, which divides the head into two lateral halves,..passes at the same time over both extremities of the occipito-mental diameter.

1855 J. King Amer. Eclectic Obstetrics viii. 48 There are four principal diameters belonging to the fetal head, viz:—1. The large, oblique, or occipito-mental diameter..,extending from the vertex or posterior fontanelle to the symphysis of the chin.

1972 E. C. Hughes Obstetric-Gynecol. Terminol. 359 The occipitomental diameter is the distance from the tip of the chin to the most prominent portion of the occiput.

1995 Rhinology 33 1 The occipitomental projection of the maxillary sinus X-ray was a good diagnostic tool in evaluating the clinical significance of septum deviation.

occipito-otic adj.

Brit.

/ɒkˌsɪpᵻtəʊˈəʊtɪk/

/əkˌsɪpᵻtəʊˈəʊtɪk/

/ɒkˌsɪpᵻtəʊˈɒtɪk/

/əkˌsɪpᵻtəʊˈɒtɪk/

U.S.

/ɑkˌsɪpᵻdoʊˈoʊdɪk/

/ɑkˌsɪpᵻdoʊˈɑdɪk/

of or relating to the occipital bone and bones of the ear.

ΚΠ

1868–9 Proc. Royal Soc. 17 279 On the fourth day of incubation the cranial part of the notochord is two-thirds the length of the primordial skull, but it does not quite reach the pituitary body; it lies therefore entirely in the occipito-otic region.

1875 Encycl. Brit. I. 761/1 The squamosal..is..somewhat loosely united with the frontal and parietal and with the complex occipito-otic bone.

1944 Amer. Midland Naturalist 31 426 The occipito-otic region consists ventrally of a wide plate that carries the slightly double knobbed occipital condyle.

1993 Development 117 409 Formation of the occipito-otic region of the skeleton is particularly complex and involves the cooperation of the five first somites and the paraxial mesoderm at the hind-brain level.

occipitoparietal adj.

Brit.

/ɒkˌsɪpᵻtə(ʊ)pᵻˈrʌɪᵻtl/

/əkˌsɪpᵻtə(ʊ)pᵻˈrʌɪᵻtl/

U.S.

/ɑkˌsɪpᵻdoʊpəˈraɪəd(ə)l/

of or relating to the occipital and parietal bones or lobes.

ΚΠ

1852 C. D. Meigs & W. B. Page tr. A. A. L. M. Velpeau Compl. Treat. Midwifery (ed. 4) iv. 204 The occipito-parietal, lambdoidal, posterior, or occipital suture seems to be only a bifurcation of the sagittal.

1861 T. H. Huxley in Proc. Zool. Soc. 253 The occipito-parietal sulcus (scissure perpenduculaire interne, Gratiolet).

1909 Philos. Trans. (Royal Soc.) B. 200 418 The vena capitis dorsalis is not an intracranial vein, but comes from the muscles in the occipito-parietal region, and passes inwards just in front of the auditory capsule.

1990 Brain 113 480 C2 was a 51-yr-old male with a dense right homonymous hemianopia secondary to a left occipitoparietal infarct.

occipitoposterior adj.

Brit.

/ɒkˌsɪpᵻtə(ʊ)pɒˈstɪərɪə/

/əkˌsɪpᵻtə(ʊ)pɒˈstɪərɪə/

U.S.

/ɑkˌsɪpᵻdoʊˌpɑˈstɪriər/

/ɑkˌsɪpᵻdoʊˌpoʊˈstɪriər/

[after French occipito-postérieur (1829 in the passage translated in quot. 1831)] Obstetrics designating a type of cephalic presentation in childbirth in which the fetal occiput is directed towards the posterior half of the mother's pelvis (usually towards the sacrum or left or right sacroiliac joint).

ΚΠ

1855 J. King Amer. Eclectic Obstetrics viii. 283 Left occipito-posterior, in which the occiput looks toward the left sacro-iliac symphysis of the mother, or posteriorly and to the left of the pelvis.

1971 Brit. Med. Bull. 27 49/1 Impaired performance was associated with toxaemia, occipitoposterior presentation and delivery in an ambulance.

1992 J. W. K. Ritchie in N. R. C. Roberton Textbk. Neonatol. (ed. 2) vi. 94/2 The procedure [sc. epidural anaesthesia] is useful in the primigravid mother whose labour requires acceleration with oxytocin, and in relief of the backache associated with occipitoposterior position.

† occipitorbicular adj. Zoology Obsolete rare connecting the occipital bone with an orbicular muscle.Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Occipitorbicular, attaching an orbicular muscle to the hindhead or occiput.

† occipito-scapular n. and adj. Obsolete rare (a) n. a muscle extending from the occiput to the base of the scapula; (b) adj. designating such a muscle.

ΚΠ

1866–7 J. Wood in Proc. Royal Soc. 15 519 Of these, the cleido-occipital, trapezius, occipito-scapular, and levator anguli scapulæ, amounting to 16 instances, are to be considered as belonging quite as much to the upper extremity.

1870 J. Wood in Philos. Trans. (Royal Soc.) 160 84 In the winter of 1866–67 I found in a muscular male subject, on both sides, a musclel extending from the occiput to the base of the scapula..which I described in the ‘Proceedings of the Royal Society’ for May 1867, under the name of the occipito-scapular muscle.

occipito-sphenoid adj. and n.

Brit.

/ɒkˌsɪpᵻtə(ʊ)ˈsfiːnɔɪd/

/əkˌsɪpᵻtə(ʊ)ˈsfiːnɔɪd/

U.S.

/ɑkˌsɪpᵻdoʊˈsfiˌnɔɪd/

rare (a) adj. of or relating to the occipital and sphenoid bones; (b) n. the occipito-sphenoid suture.

ΚΠ

1871 Amer. Naturalist 4 730/1 Occipito-sphenoid axis angular.

1890 Cent. Dict. Occipitosphenoid, pertaining to the occipital and sphenoidal bones: as, the occipitosphenoid suture.

1926 Biometrika 18 131 Norma basalis... All sutures were open with the exception of the occipito-sphenoid which was closed.

† occipito-sphenoidal adj. Obsolete rare = occipito-sphenoid adj. and n.

ΚΠ

1854 R. Owen Struct. Skeleton & Teeth in Orr's Circle Sci.: Org. Nature I. 161 An occipito-sphenoidal bone is formed, as in man, by the coalescence of the basioccipital with the basisphenoid.

1895 Philos. Trans. (Royal Soc.) A. 186 132 In the depression between the occipito-sphenoidal axis and this triangle are two foramina.

occipitotemporal adj.

Brit.

/ɒkˌsɪpᵻtə(ʊ)ˈtɛmp(ə)rəl/

/ɒkˌsɪpᵻtə(ʊ)ˈtɛmp(ə)rl̩/

/əkˌsɪpᵻtə(ʊ)ˈtɛmp(ə)rəl/

/əkˌsɪpᵻtə(ʊ)ˈtɛmp(ə)rl̩/

U.S.

/ɑkˌsɪpᵻdoʊˈtɛmp(ə)rəl/

of or relating to the occipital and temporal lobes or (rarely) bones.

ΚΠ

1861 T. H. Huxley in Proc. Zool. Soc. 258 In both brains, I find a distinct occipito-temporal sulcus.

1936 Philos. Trans. (Royal Soc.) B. 226 27 Probably it meets the squamosal underneath the tabular, and forms a small part of the margin of the large occipito-temporal foramen.

2003 Arch. Gen. Psychiatry 60 349 The fusiform gyrus (FG), or occipitotemporal gyrus, is thought to subserve the processing and encoding of faces.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	occipito-
释义	occipito-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Forms: before a vowel also occipit-. Origin: A borrowing from Latin. Etymons: Latin occipito-, occiput. Etymology: < post-classical Latin occipito-, combining form (in occipito-frontalis occipitofrontalis n.) of classical Latin occiput occiput n. Compare French occipito- (formations in which are apparently found from the 18th cent.: see occipito-frontal occipitofrontal adj.).Apparently earliest in the Latin loan occipitofrontalis n. Formations within English are found from the early 19th cent. Chiefly Anatomy and Obstetrics. Forming chiefly adjectives expressing a connection or relationship between the occiput, or occipital bone, lobe, etc., and another part; (spec. in Obstetrics) forming adjectives relating the position of the fetal occiput to the maternal pelvis, and designating diameters of the fetal head. † occipito-angular adj. Obsolete rare relating to the occipital lobe and the angular gyrus. ΚΠ 1883–4 Proc. Royal Soc. 36 222 The lesions are classified according to their position in the occipito-angular, temporal, Rolandic, frontal, and hippocampal regions respectively. 1898 Philos. Trans. (Royal Soc.) B. 190 11 A corticipetal system, passing from the external geniculate body and pulvinar thalami to the cortex of the occipito-angular region. 1909 Philos. Trans. (Royal Soc.) B. 200 126 Owing to the development of a large occipito-angular annectent gyrus. occipitoanterior adj. Brit. /ɒkˌsɪpᵻtəʊanˈtɪərɪə/ , /əkˌsɪpᵻtəʊanˈtɪərɪə/ , U.S. /ɑkˌsɪpᵻdoʊˌænˈtɪriər/ [after French occipito-antérieur (1829 in the passage translated in quot. 1831)] Obstetrics designating a type of cephalic presentation in which the fetal occiput is directed towards the anterior half of the mother's pelvis (usually towards the left or right acetabulum). ΚΠ 1831 C. D. Meigs tr. A. A. L. M. Velpeau Elem. Treat. Midwifery v. 290 The English accoucheurs..bestow the title of natural labour only upon the occipito-anterior position, while according to them, the occipito-posterior position belongs to the class of preternatural labour. 1908 Practitioner Feb. 213 Harman, in examining the records of the Belgrave Hospital, found, out of 10 cases, that the left eye was affected in 9, which he attributed to the child usually being born in the left occipito anterior position of the head. 2000 Obstetr. & Gynecol. 96 749 There was a higher incidence of instrument and emergency cesarean deliveries in occipitoposterior compared with occipitoanterior labors. occipitoatlantal adj. Brit. /ɒkˌsɪpᵻtəʊətˈlantl/ , /əkˌsɪpᵻtəʊətˈlantl/ , U.S. /ɑkˌsɪpᵻdoʊətˈlæn(t)l/ of or relating to the occiput and the atlas (first cervical vertebra). ΚΠ 1831 R. Knox tr. H. Cloquet Syst. Human Anat. (ed. 2) 178 Anterior Occipito-Atlantal Ligament. 1878–9 Proc. Royal Soc. 28 331 In the Selachians, however, it [sc. the head] is well developed, and in them the distinction between head and body by means of the occipito-atlantal articulation is late. 1909 Philos. Trans. (Royal Soc.) B. 200 414 There are a number of veins or sinuses in or about the occipito-atlantal membrane and above the supra-occipital bone. 1998 Jrnl. Neurosurg. 88 773 Because of the craniocervical ligament injury and the slight anterior occipitoatlantal dislocation, the lesion was considered to be unstable and was treated successfully with a cervical collar. occipito-atloid adj. Brit. /ɒkˌsɪpᵻtəʊˈatlɔɪd/ , /əkˌsɪpᵻtəʊˈatlɔɪd/ , U.S. /ɑkˌsɪpᵻdoʊˈætˌlɔɪd/ rare = occipitoatlantal adj. ΚΠ 1833 R. Dunglison New Dict. Med. Sci. II. 97/1 Occipito-atloid articulation is the articulation of the condyles of the occipital bone with the superior articular cavities of the atlas. 1913 Cunningham's Text-bk. Anat. (ed. 4) 310 The membrana atlanto-occipitalis anterior (anterior occipito-atloid membrane). 1989 Jrnl. Neurosurg. Sci. 33 197 The authors have found the Gilles Bertrand intra-articular C/1-C/2 bilateral arthrodesis to be an extremely efficient surgical procedure for stabilizing the occipito-atlo-axial region, producing a relative lowering of the odontoid and relieving pressure in the occipito-atloid region. † occipito-atloidal adj. [after French occipito-atloïdien (1816 in the passage translated in quot. 1828)] Obsolete rare = occipitoatlantal adj. ΚΠ 1828 R. Knox tr. H. Cloquet Syst. Human Anat. 185 Anterior occipito-atloidal ligament. occipitoaxial adj. Brit. /ɒkˌsɪpᵻtəʊˈaksɪəl/ , /əkˌsɪpᵻtəʊˈaksɪəl/ , U.S. /ɑkˌsɪpᵻdoʊˈæksiəl/ of or relating to the occiput and the axis (second cervical vertebra). ΚΠ 1890 Cent. Dict. Occipito-axial, pertaining to the occipital bone and to the axis or second cervical vertebra: applied to ligaments which are also called the apparatus ligamentosus colli. 1983 Jrnl. Anat. 136 181 Part X may project into the foramen magnum and form an occipito-axial joint. 2000 Spine 25 2133 In both cases laminoplasty of the cervical spine was performed with occipitoaxial arthrodesis. † occipito-axoid adj. Obsolete = occipitoaxial adj. ΚΠ 1833 R. Dunglison New Dict. Med. Sci. II. 97/1 Occipito-axoid Articulation is the connexion of the occipital bone with the axis or second vertebra. 1862 Gray's Anat. (U.S. ed. 2) xxxii. 188 The Posterior Common Ligament is situated within the spinal canal, and extends along the posterior surface of the bodies of the vertebræ, from the body of the axis above, where it is continuous with the occipito-axoid ligament, to the sacrum below. † occipito-axoidal adj. [after French occipito-axoïdien (1816 in the passage translated in quot. 1828)] Obsolete rare = occipitoaxial adj. ΚΠ 1828 R. Knox tr. H. Cloquet Syst. Human Anat. 186 Occipito-axoidal ligament. This ligament is not admitted by many authors, who speak of it as a prolongation of the common posterior verterbral ligament. occipitohyoid adj. Brit. /ɒkˌsɪpᵻtə(ʊ)ˈhʌɪɔɪd/ , /əkˌsɪpᵻtə(ʊ)ˈhʌɪɔɪd/ , U.S. /ɑkˌsɪpᵻdoʊˈhaɪˌɔɪd/ rare of or relating to the occipital and the hyoid bones. ΚΠ 1855–60 Rep. Explor. & Surveys (U.S. War Dept.) 188 The head is of but moderate development, it being contained four times and a half in the total length; it is a little deeper than long upon the line of its greatest depth, which is the occipito-hyoid. 1892 New Sydenham Soc. Lexicon Occipito-hyoid muscle, an occasional muscle arising from the occipital bone and inserted into the hyoid bone. occipitomastoid adj. Brit. /ɒkˌsɪpᵻtə(ʊ)ˈmastɔɪd/ , /əkˌsɪpᵻtə(ʊ)ˈmastɔɪd/ , U.S. /ɑkˌsɪpᵻdoʊˈmæˌstɔɪd/ of relating to the occipital and mastoid bones. ΚΠ 1855 L. Holden Human Osteol. 93 The ‘occipito-mastoid suture’..connects the occipital with the mastoid portion of the temporal bone. 1905 Jrnl. Anthropol. Inst. 35 37 A careful review of our records makes us believe that obliteration generally begins about midway between the lambda and the occipito-mastoid articulation, and that the upper part of the lambda closes last. 1980 Gray's Anat. (ed. 36) iii. 301/2 Inferiorly it [sc. the lambdoid suture] meets the occipitomastoid and parietomastoid sutures at the postero-inferior angle of the parietal bone. 1992 Current Anthropol. 33 541/2 Clear contrasts include..occipito-mastoid morphology. occipitomental adj. Brit. /ɒkˌsɪpᵻtə(ʊ)ˈmɛntl/ , /əkˌsɪpᵻtə(ʊ)ˈmɛntl/ , U.S. /ɑkˌsɪpᵻdoʊˈmɛn(t)l/ [ < occipito- comb. form + mental adj.²; compare French occipito-mentonnier (1829)] of or relating to the occiput and the chin; (spec. in Obstetrics) designating the diameter of the fetal skull measured from the occiput to the tip of the chin. ΚΠ 1831 C. D. Meigs tr. A. A. L. M. Velpeau Elem. Treat. Midwifery iv. 202 The occipito-mental, or great circumference, which divides the head into two lateral halves,..passes at the same time over both extremities of the occipito-mental diameter. 1855 J. King Amer. Eclectic Obstetrics viii. 48 There are four principal diameters belonging to the fetal head, viz:—1. The large, oblique, or occipito-mental diameter..,extending from the vertex or posterior fontanelle to the symphysis of the chin. 1972 E. C. Hughes Obstetric-Gynecol. Terminol. 359 The occipitomental diameter is the distance from the tip of the chin to the most prominent portion of the occiput. 1995 Rhinology 33 1 The occipitomental projection of the maxillary sinus X-ray was a good diagnostic tool in evaluating the clinical significance of septum deviation. occipito-otic adj. Brit. /ɒkˌsɪpᵻtəʊˈəʊtɪk/ , /əkˌsɪpᵻtəʊˈəʊtɪk/ , /ɒkˌsɪpᵻtəʊˈɒtɪk/ , /əkˌsɪpᵻtəʊˈɒtɪk/ , U.S. /ɑkˌsɪpᵻdoʊˈoʊdɪk/ , /ɑkˌsɪpᵻdoʊˈɑdɪk/ of or relating to the occipital bone and bones of the ear. ΚΠ 1868–9 Proc. Royal Soc. 17 279 On the fourth day of incubation the cranial part of the notochord is two-thirds the length of the primordial skull, but it does not quite reach the pituitary body; it lies therefore entirely in the occipito-otic region. 1875 Encycl. Brit. I. 761/1 The squamosal..is..somewhat loosely united with the frontal and parietal and with the complex occipito-otic bone. 1944 Amer. Midland Naturalist 31 426 The occipito-otic region consists ventrally of a wide plate that carries the slightly double knobbed occipital condyle. 1993 Development 117 409 Formation of the occipito-otic region of the skeleton is particularly complex and involves the cooperation of the five first somites and the paraxial mesoderm at the hind-brain level. occipitoparietal adj. Brit. /ɒkˌsɪpᵻtə(ʊ)pᵻˈrʌɪᵻtl/ , /əkˌsɪpᵻtə(ʊ)pᵻˈrʌɪᵻtl/ , U.S. /ɑkˌsɪpᵻdoʊpəˈraɪəd(ə)l/ of or relating to the occipital and parietal bones or lobes. ΚΠ 1852 C. D. Meigs & W. B. Page tr. A. A. L. M. Velpeau Compl. Treat. Midwifery (ed. 4) iv. 204 The occipito-parietal, lambdoidal, posterior, or occipital suture seems to be only a bifurcation of the sagittal. 1861 T. H. Huxley in Proc. Zool. Soc. 253 The occipito-parietal sulcus (scissure perpenduculaire interne, Gratiolet). 1909 Philos. Trans. (Royal Soc.) B. 200 418 The vena capitis dorsalis is not an intracranial vein, but comes from the muscles in the occipito-parietal region, and passes inwards just in front of the auditory capsule. 1990 Brain 113 480 C2 was a 51-yr-old male with a dense right homonymous hemianopia secondary to a left occipitoparietal infarct. occipitoposterior adj. Brit. /ɒkˌsɪpᵻtə(ʊ)pɒˈstɪərɪə/ , /əkˌsɪpᵻtə(ʊ)pɒˈstɪərɪə/ , U.S. /ɑkˌsɪpᵻdoʊˌpɑˈstɪriər/ , /ɑkˌsɪpᵻdoʊˌpoʊˈstɪriər/ [after French occipito-postérieur (1829 in the passage translated in quot. 1831)] Obstetrics designating a type of cephalic presentation in childbirth in which the fetal occiput is directed towards the posterior half of the mother's pelvis (usually towards the sacrum or left or right sacroiliac joint). ΚΠ 1831 C. D. Meigs tr. A. A. L. M. Velpeau Elem. Treat. Midwifery v. 290 The English accoucheurs..bestow the title of natural labour only upon the occipito-anterior position, while according to them, the occipito-posterior position belongs to the class of preternatural labour. 1855 J. King Amer. Eclectic Obstetrics viii. 283 Left occipito-posterior, in which the occiput looks toward the left sacro-iliac symphysis of the mother, or posteriorly and to the left of the pelvis. 1971 Brit. Med. Bull. 27 49/1 Impaired performance was associated with toxaemia, occipitoposterior presentation and delivery in an ambulance. 1992 J. W. K. Ritchie in N. R. C. Roberton Textbk. Neonatol. (ed. 2) vi. 94/2 The procedure [sc. epidural anaesthesia] is useful in the primigravid mother whose labour requires acceleration with oxytocin, and in relief of the backache associated with occipitoposterior position. † occipitorbicular adj. Zoology Obsolete rare connecting the occipital bone with an orbicular muscle.Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Occipitorbicular, attaching an orbicular muscle to the hindhead or occiput. † occipito-scapular n. and adj. Obsolete rare (a) n. a muscle extending from the occiput to the base of the scapula; (b) adj. designating such a muscle. ΚΠ 1866–7 J. Wood in Proc. Royal Soc. 15 519 Of these, the cleido-occipital, trapezius, occipito-scapular, and levator anguli scapulæ, amounting to 16 instances, are to be considered as belonging quite as much to the upper extremity. 1870 J. Wood in Philos. Trans. (Royal Soc.) 160 84 In the winter of 1866–67 I found in a muscular male subject, on both sides, a musclel extending from the occiput to the base of the scapula..which I described in the ‘Proceedings of the Royal Society’ for May 1867, under the name of the occipito-scapular muscle. occipito-sphenoid adj. and n. Brit. /ɒkˌsɪpᵻtə(ʊ)ˈsfiːnɔɪd/ , /əkˌsɪpᵻtə(ʊ)ˈsfiːnɔɪd/ , U.S. /ɑkˌsɪpᵻdoʊˈsfiˌnɔɪd/ rare (a) adj. of or relating to the occipital and sphenoid bones; (b) n. the occipito-sphenoid suture. ΚΠ 1871 Amer. Naturalist 4 730/1 Occipito-sphenoid axis angular. 1890 Cent. Dict. Occipitosphenoid, pertaining to the occipital and sphenoidal bones: as, the occipitosphenoid suture. 1926 Biometrika 18 131 Norma basalis... All sutures were open with the exception of the occipito-sphenoid which was closed. † occipito-sphenoidal adj. Obsolete rare = occipito-sphenoid adj. and n. ΚΠ 1854 R. Owen Struct. Skeleton & Teeth in Orr's Circle Sci.: Org. Nature I. 161 An occipito-sphenoidal bone is formed, as in man, by the coalescence of the basioccipital with the basisphenoid. 1895 Philos. Trans. (Royal Soc.) A. 186 132 In the depression between the occipito-sphenoidal axis and this triangle are two foramina. occipitotemporal adj. Brit. /ɒkˌsɪpᵻtə(ʊ)ˈtɛmp(ə)rəl/ , /ɒkˌsɪpᵻtə(ʊ)ˈtɛmp(ə)rl̩/ , /əkˌsɪpᵻtə(ʊ)ˈtɛmp(ə)rəl/ , /əkˌsɪpᵻtə(ʊ)ˈtɛmp(ə)rl̩/ , U.S. /ɑkˌsɪpᵻdoʊˈtɛmp(ə)rəl/ of or relating to the occipital and temporal lobes or (rarely) bones. ΚΠ 1861 T. H. Huxley in Proc. Zool. Soc. 258 In both brains, I find a distinct occipito-temporal sulcus. 1936 Philos. Trans. (Royal Soc.) B. 226 27 Probably it meets the squamosal underneath the tabular, and forms a small part of the margin of the large occipito-temporal foramen. 2003 Arch. Gen. Psychiatry 60 349 The fusiform gyrus (FG), or occipitotemporal gyrus, is thought to subserve the processing and encoding of faces. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). < comb. form1828
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