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epitrichium

American  
[ep-i-trik-ee-uhm] / ˌɛp ɪˈtrɪk i əm /

noun

Embryology.

plural

epitrichiums

  1. the outermost layer of the epidermis in most mammalian fetuses, usually disappearing before birth.

Other Word Forms

  • epitrichial adjective

Etymology

Origin of epitrichium

1880–85; < New Latin epi- + -trichium < Greek tríchion, diminutive of thríx hair ( see trichion); so called because hair develops under it in human embryos

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.