mediastinumn.

Brit.

/ˌmiːdɪəˈstʌɪnəm/, U.S.

/ˌmidiəˈstaɪnəm/

Inflections: Plural mediastina.

Origin: A borrowing from Latin. Etymon: Latin mediastinum.

Etymology: < post-classical Latin mediastinum (1363 in Chauliac; compare quot. ?a1425 at main sense), neuter of mediastinus middle, medial, intermediate (6th cent.), use as adjective of classical Latin mediastīnus mediastine n.² (for the unusual semantic development see discussion at that entry). Compare mediastine n.¹

Anatomy.

A septum or partition between two body cavities or two parts of an organ; esp. that dividing the thorax, separating the right and left pleural cavities and containing the heart, trachea, oesophagus, thymus, etc.anterior, middle, posterior, superior mediastinum: see the first element.

ΘΚΠ

the world > life > biology > physical aspects or shapes > specific areas or structures > [noun] > separation or partition

mediastinum?a1425

mediastine?c1425

septum1543

paries1694

interseptum1753

cameration1863

abstriction1877

abjunction1887

macroseptum1904

the world > life > the body > respiratory organs > [noun] > lungs > membranes of

mediastinum?a1425

pleura?a1425

mediastine?c1425

?a1425 tr. Guy de Chauliac Grande Chirurgie (Hunterian) f. 58 (MED) Þe secounde pannikel is cleped mediastinum, þe whiche diuideþ alle þe fourneis off þe bodie in to þe riȝt side & þe lefte side.

?1541 R. Copland Guy de Chauliac's Questyonary Cyrurgyens ii. sig. Hj With the mediastinum wherwith it [sc. the heart] is steyed and strengthed.

1615 H. Crooke Μικροκοσμογραϕια 360 The Pericardium toucheth not the Lunges but by the interposition of the Mediastinum.

1667 Philos. Trans. (Royal Soc.) 2 547 It..ran three fingers thickness to the left of the Mediastinum.

1704 J. Harris Lexicon Technicum I Phrenick vessels, are the Veins and Arteries that run through the Diaphragm, Mediastinum, and Pericardium.

1793 M. Baillie Morbid Anat. Contents p. xv The Posterior Mediastinum.

1803 J. Barclay New Anat. Nomencl. 121 Suppose a plane, to pass along the middle of the neck, the mediastinum, and linea alba.

1847 S. R. Pittard in Todd's Cycl. Anat. & Physiol. IV. 1/2 The term mediastinum is applied by some writers to the antero-posterior vertical septum of the chest, by others to the spaces occupied by the viscera situated between its layers; in the latter sense of the term three mediastina are enumerated—anterior, posterior, and middle.

1876 T. Bryant Pract. Surg. (ed. 2) I. i. 49 Pericarditis or suppurative inflammation of the mediastinum.

1926 Jrnl. Pathol. & Bacteriol. 29 244 The so-called ‘oat-celled Sarcoma’ of the posterior mediastinum is a medullary carcinoma of the bronchi.

1968 R. Passmore & J. S. Robson Compan. Med. Stud. I. xxxvii. 22/1 Both ends join a series of about thirty short, so-called straight tubules which converge on a network of vessels lying in the mediastinum [testis].

1988 L. Ellmann Sweet Desserts 21 Under satisfactory endotracheal anaesthesia, after the usual preparation and draping, the mediastinum was entered through a sternal splitting incision.

Compounds

† mediastinum auris n. Obsolete rare the tympanic membrane.

ΘΚΠ

the world > life > the body > sense organ > hearing organ > parts of hearing organ > [noun] > other parts

otocony1835

otoconium1838

mediastinum auris1848

porion1909

otolith organ1919

otolithic membrane1932

stereo-cilium1933

1848 R. Dunglison Med. Lexicon (ed. 7) 532/1 Mediastinum auris, see Tympanum.

† mediastinum cerebelli n. Obsolete rare = falx cerebelli at falx n. 1.

ΚΠ

1890 J. S. Billings National Med. Dict. 123/1 Mediastinum cerebelli, falx cerebelli.

† mediastinum cerebri n. Obsolete rare = falx cerebri at falx n. 1.

ΚΠ

1728 E. Chambers Cycl. Mediastinum cerebri, is the same as Septum Transversum.

mediastinum testis n. the partial septum of the testicle, formed by reflection of the tunica albuginea.

ΘΚΠ

the world > life > the body > sex organs > male sex organs > [noun] > tissue of

tunica albuginea1698

erectile tissue1830

mediastinum testis1830

1830 A. Cooper Observ. Struct. & Dis. Testis i. 13 The tunica albuginea turns in towards the centre of the testis, and forms a triangular process, which, from its situation, I should call mediastinum testis.

1970 T. S. Leeson & C. R. Leeson Histol. (ed. 2) xix. 444/1 This [sc. the tunica albuginea] is composed of dense fibroelastic connective tissue and is thickened along the posterior surface of the testis where it projects into the interior of the gland as the mediastinum testis.

This entry has been updated (OED Third Edition, June 2001; most recently modified version published online June 2022).

单词	mediastinum
释义	mediastinumn. Brit. /ˌmiːdɪəˈstʌɪnəm/, U.S. /ˌmidiəˈstaɪnəm/ Inflections: Plural mediastina. Origin: A borrowing from Latin. Etymon: Latin mediastinum. Etymology: < post-classical Latin mediastinum (1363 in Chauliac; compare quot. ?a1425 at main sense), neuter of mediastinus middle, medial, intermediate (6th cent.), use as adjective of classical Latin mediastīnus mediastine n.² (for the unusual semantic development see discussion at that entry). Compare mediastine n.¹ Anatomy. A septum or partition between two body cavities or two parts of an organ; esp. that dividing the thorax, separating the right and left pleural cavities and containing the heart, trachea, oesophagus, thymus, etc.anterior, middle, posterior, superior mediastinum: see the first element. ΘΚΠ the world > life > biology > physical aspects or shapes > specific areas or structures > [noun] > separation or partition mediastinum?a1425 mediastine?c1425 septum1543 paries1694 interseptum1753 cameration1863 abstriction1877 abjunction1887 macroseptum1904 the world > life > the body > respiratory organs > [noun] > lungs > membranes of mediastinum?a1425 pleura?a1425 mediastine?c1425 ?a1425 tr. Guy de Chauliac Grande Chirurgie (Hunterian) f. 58 (MED) Þe secounde pannikel is cleped mediastinum, þe whiche diuideþ alle þe fourneis off þe bodie in to þe riȝt side & þe lefte side. ?1541 R. Copland Guy de Chauliac's Questyonary Cyrurgyens ii. sig. Hj With the mediastinum wherwith it [sc. the heart] is steyed and strengthed. 1615 H. Crooke Μικροκοσμογραϕια 360 The Pericardium toucheth not the Lunges but by the interposition of the Mediastinum. 1667 Philos. Trans. (Royal Soc.) 2 547 It..ran three fingers thickness to the left of the Mediastinum. 1704 J. Harris Lexicon Technicum I Phrenick vessels, are the Veins and Arteries that run through the Diaphragm, Mediastinum, and Pericardium. 1793 M. Baillie Morbid Anat. Contents p. xv The Posterior Mediastinum. 1803 J. Barclay New Anat. Nomencl. 121 Suppose a plane, to pass along the middle of the neck, the mediastinum, and linea alba. 1847 S. R. Pittard in Todd's Cycl. Anat. & Physiol. IV. 1/2 The term mediastinum is applied by some writers to the antero-posterior vertical septum of the chest, by others to the spaces occupied by the viscera situated between its layers; in the latter sense of the term three mediastina are enumerated—anterior, posterior, and middle. 1876 T. Bryant Pract. Surg. (ed. 2) I. i. 49 Pericarditis or suppurative inflammation of the mediastinum. 1926 Jrnl. Pathol. & Bacteriol. 29 244 The so-called ‘oat-celled Sarcoma’ of the posterior mediastinum is a medullary carcinoma of the bronchi. 1968 R. Passmore & J. S. Robson Compan. Med. Stud. I. xxxvii. 22/1 Both ends join a series of about thirty short, so-called straight tubules which converge on a network of vessels lying in the mediastinum [testis]. 1988 L. Ellmann Sweet Desserts 21 Under satisfactory endotracheal anaesthesia, after the usual preparation and draping, the mediastinum was entered through a sternal splitting incision. Compounds † mediastinum auris n. Obsolete rare the tympanic membrane. ΘΚΠ the world > life > the body > sense organ > hearing organ > parts of hearing organ > [noun] > other parts otocony1835 otoconium1838 mediastinum auris1848 porion1909 otolith organ1919 otolithic membrane1932 stereo-cilium1933 1848 R. Dunglison Med. Lexicon (ed. 7) 532/1 Mediastinum auris, see Tympanum. † mediastinum cerebelli n. Obsolete rare = falx cerebelli at falx n. 1. ΚΠ 1890 J. S. Billings National Med. Dict. 123/1 Mediastinum cerebelli, falx cerebelli. † mediastinum cerebri n. Obsolete rare = falx cerebri at falx n. 1. ΚΠ 1728 E. Chambers Cycl. Mediastinum cerebri, is the same as Septum Transversum. mediastinum testis n. the partial septum of the testicle, formed by reflection of the tunica albuginea. ΘΚΠ the world > life > the body > sex organs > male sex organs > [noun] > tissue of tunica albuginea1698 erectile tissue1830 mediastinum testis1830 1830 A. Cooper Observ. Struct. & Dis. Testis i. 13 The tunica albuginea turns in towards the centre of the testis, and forms a triangular process, which, from its situation, I should call mediastinum testis. 1970 T. S. Leeson & C. R. Leeson Histol. (ed. 2) xix. 444/1 This [sc. the tunica albuginea] is composed of dense fibroelastic connective tissue and is thickened along the posterior surface of the testis where it projects into the interior of the gland as the mediastinum testis. This entry has been updated (OED Third Edition, June 2001; most recently modified version published online June 2022). < n.?a1425
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