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ep•i•trich•i•um



Pronunciation: (ep"i-trik'ē-um), [key]
n.,
pl. -ums.
Embryol.
the outermost layer of the epidermis in most mammalian fetuses, usually disappearing before birth. Also called periderm.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

epitrachelionepitrochoid

 

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