英语词汇“tapetum”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮

单词

tapetum

释义

‖ tapetum|təˈpiːtəm|
[Late and med.L. tapētum (pl. tapēta in Probus), for L. tapēte carpet.]
1. Comp. Anat. An irregular sector of the choroid membrane in the eyes of certain animals (e.g. the cat), which shines owing to the absence of the black pigment; also tapetum lucidum or t. choroideæ.
1713Derham Phys. Theol. iv. ii. 102 This Illumination he speaks of, is from the Tapetum in the bottom of the Eye.1799Monthly Rev. XXX. 146 The posterior half of a cat's eye..was immersed in a bason of water, and examined. The tapetum appeared very bright, the retina not having acquired sufficient opacity to become visible.1869H. Ussher in Eng. Mech. 3 Dec. 270/3 A..shining appearance at the bottom of the eye, called the ‘tapetum’ or ‘carpet’.
2. Bot. The layer of epithelial cells which lines the inner wall of the sporangium in ferns, etc., or of the pollen-sac in flowering-plants.
1882Vines Sachs' Bot. 437 The inner cell again forms four tabular segments which are parallel to the outer parietal cells and which constitute the tapetum.1885G. L. Goodale Physiol. Bot. (1892) 171 note, The epithelium which lines the pollen-sac has been termed the Tapetum.

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