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单词 tapetum
释义

tapetum

noun

ta·​pe·​tum tə-ˈpē-təm How to pronounce tapetum (audio)
plural tapeta tə-ˈpē-tə How to pronounce tapetum (audio)
1
: any of various reflective membranous layers or areas especially of the choroid and retina of the eye
2
: a layer of nutritive cells that invests the sporogenous tissue in the sporangium of vascular plants

Example Sentences

Recent Examples on the Web Exactly how the tapetum’s fibers close in on one another isn’t yet clear, even two decades in. Katherine J. Wu, The Atlantic, 28 June 2022 The part of the eye that changes color is the tapetum lucidum, a layer of tissue found behind the retina. Nayeli Lomeli, USA TODAY, 15 Dec. 2021 The tapetum lucidum, which lines most of the back of the retina, comes into play in low-light situations, allowing the cat's eye to take in extra light. Star Tribune, 21 May 2021 Some creatures, including cats, raccoons, and dogs, have a layer of reflective tissue in their eyes known as the tapetum lucidum. Matt Simon, WIRED, 14 Jan. 2015

Word History

Etymology

New Latin, from Latin tapete carpet, tapestry, from Greek tapēt-, tapēs carpet

First Known Use

1713, in the meaning defined at sense 1

Medical Definition

tapetum

noun

ta·​pe·​tum tə-ˈpēt-əm How to pronounce tapetum (audio)
plural tapeta -ˈpēt-ə How to pronounce tapetum (audio)
1
: any of various membranous layers or areas especially of the choroid and retina of the eye
specifically : tapetum lucidum
2
: a layer of nerve fibers derived from the corpus callosum and forming part of the roof of each lateral ventricle of the brain
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更新时间:2024/9/20 7:55:31