choroidadj.n.

Brit.

/ˈkɔːrɔɪd/,

/ˈkɒrɔɪd/, U.S.

/ˈkɔrɔɪd/

Forms: Also 1600s–1700s -oide.

Etymology: < Greek χοροειδής, corrupt reading for χοριοειδής (χ. χιτών ‘the choroid coat of the eye’ Galen), < χόριον (see chorion n.) + εἶδος resemblance.

Anatomy.

Applied to certain structures resembling the chorion in form and vascularity; and to structures connected with these.

1. choroid coat (or tunic): a vascular membrane lining the eyeball, between the sclerotic coat and the retina, continuous in front with the iris, and containing numerous dark pigment cells. choroid gland: a gland-like plexus of blood vessels of crescentic or annular form, imbedded in the choroid coat of the eye in osseous fishes. choroid membrane = choroid coat at coat n. 7b; see also 2 choroid muscle: the ciliary muscle of the eye.

ΘΚΠ

the world > life > the body > sense organ > sight organ > parts of sight organ > [noun] > coats of

uvea1525

sclerotica?1541

salvatrice1583

chorion1650

sclerotis1670

choroid1683

sclerotic tunic1691

sclerotic1696

goggle?1705

choroid membrane1741

sclerotic coat1741

sclerotic membrane1842

suprachoroid1871

sclera1888

1741 A. Monro Anat. Nerves 44 in Anat. Human Bones (ed. 3) The choroid Coat on the Outside of the Retina.

1764 T. Reid Inq. Human Mind vi. §12 The..function of the choroid membrane.

1778 Philos. Trans. 1777 (Royal Soc.) 68 91 There was..a dispute..whether the choroid coat of the eye or the retina was the immediate cause of vision.

1835–6 Todd's Cycl. Anat. & Physiol. I. 553/2 The so-called choroid gland in the eyes of Fishes.

1841 T. R. Jones Gen. Outl. Animal Kingdom xxvii. 524 A vascular organ..called the ‘choroid gland’ by the older anatomists..is of a crescentic form, and always of a deep red colour.

1881 E. B. Tylor Anthropol. 70 The black pigment lining the choroid coat at the back of the eye.

2. choroid membrane: a name for the pia mater (Chambers Cycl.), and for the velum interpositum of the brain (Mayne Exp. Lex.); apparently obsolete in both senses; see also 1 choroid plexus: a plexus of blood vessels connected by a thin membrane derived from the pia mater, in each lateral ventricle of the brain, forming a cord-like border on each side of the velum interpositum; also applied to similar structures in the third and fourth ventricles. choroid artery, posterior choroid artery: two arteries arising respectively from the internal carotid and the posterior cerebral arteries on each side, and contributing to form the choroid plexus. choroid vein: a vein connected with the choroid plexus.

ΚΠ

1696 E. Phillips New World of Words (new ed.) Choroides, the folding of the Carotid Artery in the Brain.

1728 E. Chambers Cycl. (at cited word) Choroides is us'd for the inner Membrane that immediately invests the Brain.

1731 N. Bailey Universal Etymol. Eng. Dict. (ed. 5) Choroides Plexus.]

1835–6 Todd's Cycl. Anat. & Physiol. I. 493/1 After having given off the choroid artery, the internal carotid divides.

1842 E. Wilson Anatomist's Vade Mecum (ed. 2) 377 The Choroid plexus is a vascular fringe extending obliquely across the floor of the lateral ventricle.

1881 New Sydenham Soc. Lexicon Choroid vein of cerebrum, a vein in the outer border of each choroid plexus.

a. elliptical as n. The choroid coat or gland; see 1.

ΘΚΠ

the world > life > the body > sense organ > sight organ > parts of sight organ > [noun] > coats of

uvea1525

sclerotica?1541

salvatrice1583

chorion1650

sclerotis1670

choroid1683

sclerotic tunic1691

sclerotic1696

goggle?1705

choroid membrane1741

sclerotic coat1741

sclerotic membrane1842

suprachoroid1871

sclera1888

1683 Philos. Trans. (Royal Soc.) 13 265 The Choroide is the seat of vision and not the retina.

1800 Young Mech. Eye in Philos. Trans. (Royal Soc.) 91 79 The horse-shoe-like appearance of the choroid of fishes.

1842 E. Wilson Anatomist's Vade Mecum (ed. 2) 450 The Choroid is a vascular membrane of a rich chocolate-brown colour upon its external surface, and of a deep black colour within.

†b. Formerly also choroides, choroeides.Apparently this was also used for the choroid membrane and the choroid plexus; see 2.

ΚΠ

1634 T. Johnson tr. A. Paré Chirurg. Wks. 183 Some call this coat Choroides, because it is woven with many veines and arteries, like the coat Chorion.

1676 Philos. Trans. (Royal Soc.) 11 746 Why the Uvea or Choroides is black in Men, but of divers colours in Brutes.

1822 T. Webster Imison's Elem. Sci. & Art (new ed.) I. 251 The whole of the choroides is opaque.

Derivatives

choˈroidal adj. †(a) belonging to the choroid membrane of the brain (obsolete); (b) belonging to the choroid coat of the eye.

ΘΚΠ

the world > life > the body > sense organ > sight organ > parts of sight organ > [adjective] > coats of

grapy1398

sclerotic1829

suprachoroid1832

scleral1869

suprachoroidal1869

choroidal1875

1681 Table of Hard Words in S. Pordage tr. T. Willis Remaining Med. Wks. Chorodeidal [sic], belonging to the net, like to the infoldings about the brain.

1875 H. Walton Pract. Treat. Dis. Eye (ed. 3) Introd. 22 The choroidal pigment.

1875 H. Walton Pract. Treat. Dis. Eye (ed. 3) 713 Choroidal complications.

choˈroidean adj. pertaining to the choroid (plexus); choroidean artery = choroid artery at sense 2, see 2.

ΚΠ

1842 E. Wilson Anatomist's Vade Mecum (ed. 2) 282 The Choroidean is a small branch which is given off from the internal carotid.

choroiˈditis n. [see -itis suffix] Pathology inflammation of the choroid coat.

ΘΚΠ

the world > health and disease > ill health > a disease > disorders of eye > [noun] > disorders of coats or humours

sclerotitis1829

hyalitis1847

hyaloiditis1854

retinochoroiditis1863

aphakia1864

iridochoroiditis1874

choroiditis1878

scleritis1879

1878 A. M. Hamilton Nerv. Dis. 66 Blindness..which was the result of suppurative choroiditis.

This entry has not yet been fully updated (first published 1889; most recently modified version published online June 2022).

单词	choroid
释义	choroidadj.n. Brit. /ˈkɔːrɔɪd/, /ˈkɒrɔɪd/, U.S. /ˈkɔrɔɪd/ Forms: Also 1600s–1700s -oide. Etymology: < Greek χοροειδής, corrupt reading for χοριοειδής (χ. χιτών ‘the choroid coat of the eye’ Galen), < χόριον (see chorion n.) + εἶδος resemblance. Anatomy. Applied to certain structures resembling the chorion in form and vascularity; and to structures connected with these. 1. choroid coat (or tunic): a vascular membrane lining the eyeball, between the sclerotic coat and the retina, continuous in front with the iris, and containing numerous dark pigment cells. choroid gland: a gland-like plexus of blood vessels of crescentic or annular form, imbedded in the choroid coat of the eye in osseous fishes. choroid membrane = choroid coat at coat n. 7b; see also 2 choroid muscle: the ciliary muscle of the eye. ΘΚΠ the world > life > the body > sense organ > sight organ > parts of sight organ > [noun] > coats of uvea1525 sclerotica?1541 salvatrice1583 chorion1650 sclerotis1670 choroid1683 sclerotic tunic1691 sclerotic1696 goggle?1705 choroid membrane1741 sclerotic coat1741 sclerotic membrane1842 suprachoroid1871 sclera1888 1741 A. Monro Anat. Nerves 44 in Anat. Human Bones (ed. 3) The choroid Coat on the Outside of the Retina. 1764 T. Reid Inq. Human Mind vi. §12 The..function of the choroid membrane. 1778 Philos. Trans. 1777 (Royal Soc.) 68 91 There was..a dispute..whether the choroid coat of the eye or the retina was the immediate cause of vision. 1835–6 Todd's Cycl. Anat. & Physiol. I. 553/2 The so-called choroid gland in the eyes of Fishes. 1841 T. R. Jones Gen. Outl. Animal Kingdom xxvii. 524 A vascular organ..called the ‘choroid gland’ by the older anatomists..is of a crescentic form, and always of a deep red colour. 1881 E. B. Tylor Anthropol. 70 The black pigment lining the choroid coat at the back of the eye. 2. choroid membrane: a name for the pia mater (Chambers Cycl.), and for the velum interpositum of the brain (Mayne Exp. Lex.); apparently obsolete in both senses; see also 1 choroid plexus: a plexus of blood vessels connected by a thin membrane derived from the pia mater, in each lateral ventricle of the brain, forming a cord-like border on each side of the velum interpositum; also applied to similar structures in the third and fourth ventricles. choroid artery, posterior choroid artery: two arteries arising respectively from the internal carotid and the posterior cerebral arteries on each side, and contributing to form the choroid plexus. choroid vein: a vein connected with the choroid plexus. ΚΠ 1696 E. Phillips New World of Words (new ed.) Choroides, the folding of the Carotid Artery in the Brain. 1728 E. Chambers Cycl. (at cited word) Choroides is us'd for the inner Membrane that immediately invests the Brain. 1731 N. Bailey Universal Etymol. Eng. Dict. (ed. 5) Choroides Plexus.] 1835–6 Todd's Cycl. Anat. & Physiol. I. 493/1 After having given off the choroid artery, the internal carotid divides. 1842 E. Wilson Anatomist's Vade Mecum (ed. 2) 377 The Choroid plexus is a vascular fringe extending obliquely across the floor of the lateral ventricle. 1881 New Sydenham Soc. Lexicon Choroid vein of cerebrum, a vein in the outer border of each choroid plexus. 3. a. elliptical as n. The choroid coat or gland; see 1. ΘΚΠ the world > life > the body > sense organ > sight organ > parts of sight organ > [noun] > coats of uvea1525 sclerotica?1541 salvatrice1583 chorion1650 sclerotis1670 choroid1683 sclerotic tunic1691 sclerotic1696 goggle?1705 choroid membrane1741 sclerotic coat1741 sclerotic membrane1842 suprachoroid1871 sclera1888 1683 Philos. Trans. (Royal Soc.) 13 265 The Choroide is the seat of vision and not the retina. 1800 Young Mech. Eye in Philos. Trans. (Royal Soc.) 91 79 The horse-shoe-like appearance of the choroid of fishes. 1842 E. Wilson Anatomist's Vade Mecum (ed. 2) 450 The Choroid is a vascular membrane of a rich chocolate-brown colour upon its external surface, and of a deep black colour within. †b. Formerly also choroides, choroeides.Apparently this was also used for the choroid membrane and the choroid plexus; see 2. ΚΠ 1634 T. Johnson tr. A. Paré Chirurg. Wks. 183 Some call this coat Choroides, because it is woven with many veines and arteries, like the coat Chorion. 1676 Philos. Trans. (Royal Soc.) 11 746 Why the Uvea or Choroides is black in Men, but of divers colours in Brutes. 1822 T. Webster Imison's Elem. Sci. & Art (new ed.) I. 251 The whole of the choroides is opaque. Derivatives choˈroidal adj. †(a) belonging to the choroid membrane of the brain (obsolete); (b) belonging to the choroid coat of the eye. ΘΚΠ the world > life > the body > sense organ > sight organ > parts of sight organ > [adjective] > coats of grapy1398 sclerotic1829 suprachoroid1832 scleral1869 suprachoroidal1869 choroidal1875 1681 Table of Hard Words in S. Pordage tr. T. Willis Remaining Med. Wks. Chorodeidal [sic], belonging to the net, like to the infoldings about the brain. 1875 H. Walton Pract. Treat. Dis. Eye (ed. 3) Introd. 22 The choroidal pigment. 1875 H. Walton Pract. Treat. Dis. Eye (ed. 3) 713 Choroidal complications. choˈroidean adj. pertaining to the choroid (plexus); choroidean artery = choroid artery at sense 2, see 2. ΚΠ 1842 E. Wilson Anatomist's Vade Mecum (ed. 2) 282 The Choroidean is a small branch which is given off from the internal carotid. choroiˈditis n. [see -itis suffix] Pathology inflammation of the choroid coat. ΘΚΠ the world > health and disease > ill health > a disease > disorders of eye > [noun] > disorders of coats or humours sclerotitis1829 hyalitis1847 hyaloiditis1854 retinochoroiditis1863 aphakia1864 iridochoroiditis1874 choroiditis1878 scleritis1879 1878 A. M. Hamilton Nerv. Dis. 66 Blindness..which was the result of suppurative choroiditis. This entry has not yet been fully updated (first published 1889; most recently modified version published online June 2022). < adj.n.1634
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