Tapetum Definition

tə-pētəm
tapetum
noun
Any of various membranous layers.
Webster's New World
A nutritive layer of cells lining the inner wall of a fern sporangium or of an anther.
Webster's New World
A reflective membrane in the back of the eye of many animals that are active during low-light conditions.
American Heritage Medicine
A layer of fibers of the corpus callosum forming the roof of part of the lateral ventricle of the brain.
American Heritage Medicine

Origin of Tapetum

  • Medieval Latin tapētum coverlet from Latin tapēte, *tapētum from Greek tapēs tapēt- tapestry

    From American Heritage Dictionary of the English Language, 5th Edition

Tapetum Sentence Examples

  • The transgenic construct included a barnase ribonuclease gene controlled by a tapetum promoter.

  • Horses ' eyes contain an additional shiny layer behind the retina called the tapetum lucidum, a feature shared by nocturnal animals.

  • Surrounding the pitted wall of the ovum there is a definite layer of large cells, no doubt representing a tapetum, which, as in cycads and conifers, plays an important part in nourishing the growing egg-cell.

  • The tapetum is derived from the layer of cells surrounding the sporogenous group. Short trabeculae of sterile tissue have been found to project into the cavity of the sporangium of some species.

  • The sporogenous tissue, which is referable to several archesporial cells, is surrounded by a tapetum, mostly derived from the sporogenous group. In the microsporangium all the mother-cells undergo the tetrad division, giving rise to the numerous microspores.

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Words Starting With

TTATAP

Words Ending With

MUMTUM

Unscrambles

tapetum

Words Starting With T and Ending With M

Starts With T & Ends With MStarts With TA & Ends With MStarts With T & Ends With UM

Word Length

7 Letter Words7 Letter Words Starting With T7 Letter Words Ending With M