entropionn.

Brit.

/ɛnˈtrəʊpɪən/, U.S.

/ɛnˈtroʊpiən/

Forms:

α. 1700s–1800s entropium.

β. 1700s– entropion.

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

Etymology: < scientific Latin entropium (1755 or earlier) < ancient Greek ἐντροπή action of turning towards ( < ἐν- en- prefix² + τροπή turn, turning (see trope n.), after ἐντρέπειν to turn inwards) + scientific Latin -ium (see -y suffix⁴), after ectropium ectropion n. Compare earlier ectropion n.The β. forms show remodelling of the ending after either ectropion n. or perhaps French entropion (1808 or earlier; 1792 as antropium).

Medicine.

A condition in which the edge of an eyelid is turned inwards, often resulting in irritation of the eye by the lashes, and typically occurring as a result of scarring or muscle spasm, or as an inherited trait in various breeds of domestic animal; an instance of this.

ΚΠ

1743 tr. L. Heister Gen. Syst. Surg. I. ii. 369 This Disorder is, by the Greeks, termed Trichiasis, or Distichiasin, hairy; and sometimes Entropion [L. entropium], Inversion, because herein the Lids, and their Cilia, or Hairs, are inverted, so as to offend the Eye.

1785 B. Bell Syst. Surg. III. xxvii. 275 (note) The Trichiasis and Entropium of authors.

1844 J. Pancoast Treat. Operative Surg. iii. i. 193/1 In trichiasis, the eyelashes only are inverted upon the lid..; but in entropion, the cartilage is inverted to a greater or less extent in the same direction as the hairs.

1876 T. Bryant Pract. Surg. (ed. 2) I. viii. 334 Entropion signifies a rolling inwards of the whole lid, the whole row of lashes being completely turned towards the eyeball.

1911 J. B. Hurry Vicious Circles in Dis. x. 148 The blepharospasm gives rise to a spastic entropion which causes the cilia to be directed backwards.

1962 Jrnl. Heredity 53 10/1 Entropion is..common in sheep in Rambouillet, Merino, Shropshire and possibly other breeds.

1998 Daily Tel. 17 Feb. 18/2 This sort of problem comes in two forms: the eyelid may curl inwards—known as entropion—so that the eyelashes rub against the cornea and cause scarring, or, as in the reader's case, it droops outwards—ectropion.

2005 Dogs in Canada Jan. 15/2 I brought her to a new vet to have her eyes checked for entropion.

This entry has been updated (OED Third Edition, September 2018; most recently modified version published online March 2022).

单词	entropion
释义	entropionn. Brit. /ɛnˈtrəʊpɪən/, U.S. /ɛnˈtroʊpiən/ Forms: α. 1700s–1800s entropium. β. 1700s– entropion. Origin: A borrowing from Latin. Etymon: Latin entropium. Etymology: < scientific Latin entropium (1755 or earlier) < ancient Greek ἐντροπή action of turning towards ( < ἐν- en- prefix² + τροπή turn, turning (see trope n.), after ἐντρέπειν to turn inwards) + scientific Latin -ium (see -y suffix⁴), after ectropium ectropion n. Compare earlier ectropion n.The β. forms show remodelling of the ending after either ectropion n. or perhaps French entropion (1808 or earlier; 1792 as antropium). Medicine. A condition in which the edge of an eyelid is turned inwards, often resulting in irritation of the eye by the lashes, and typically occurring as a result of scarring or muscle spasm, or as an inherited trait in various breeds of domestic animal; an instance of this. ΚΠ 1743 tr. L. Heister Gen. Syst. Surg. I. ii. 369 This Disorder is, by the Greeks, termed Trichiasis, or Distichiasin, hairy; and sometimes Entropion [L. entropium], Inversion, because herein the Lids, and their Cilia, or Hairs, are inverted, so as to offend the Eye. 1785 B. Bell Syst. Surg. III. xxvii. 275 (note) The Trichiasis and Entropium of authors. 1844 J. Pancoast Treat. Operative Surg. iii. i. 193/1 In trichiasis, the eyelashes only are inverted upon the lid..; but in entropion, the cartilage is inverted to a greater or less extent in the same direction as the hairs. 1876 T. Bryant Pract. Surg. (ed. 2) I. viii. 334 Entropion signifies a rolling inwards of the whole lid, the whole row of lashes being completely turned towards the eyeball. 1911 J. B. Hurry Vicious Circles in Dis. x. 148 The blepharospasm gives rise to a spastic entropion which causes the cilia to be directed backwards. 1962 Jrnl. Heredity 53 10/1 Entropion is..common in sheep in Rambouillet, Merino, Shropshire and possibly other breeds. 1998 Daily Tel. 17 Feb. 18/2 This sort of problem comes in two forms: the eyelid may curl inwards—known as entropion—so that the eyelashes rub against the cornea and cause scarring, or, as in the reader's case, it droops outwards—ectropion. 2005 Dogs in Canada Jan. 15/2 I brought her to a new vet to have her eyes checked for entropion. This entry has been updated (OED Third Edition, September 2018; most recently modified version published online March 2022). < n.1743
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