Site Map | FAQ

• Editor's Favorites
  • Answerplease: A new Q & A site
  • Black History Month
  • Valentine's Day
  • 2011 Year in Review
  • Campaign 2012
  • Country Profiles
  • Most Populous Cities of the World
  • Holidays in America
  • 50 States
  • Conversion Calculator
  • Color Psychology
  • Top 50 U.S. Cities
  • Infoplease's Facebook page
  • Follow Infoplease on Twitter

 

Dictionary

blas•to•derm

Pronunciation: (blas'tu-dûrm"), [key]
—n. Embryol.
1. the primitive layer of cells that results from the segmentation of the ovum.
2. the layer of cells forming the wall of the blastula, and in most vertebrates enclosing a cavity or a yolk mass.

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

blastocyst

blastodisk

• • Cite
  • Print
  • Email
  • Bookmark
    • Add bookmark
    • Add to del.icio.us
    • Digg It!
    • Add to Reddit

Related Content Daily Word Quiz: polymath Analogy of the Day: Today's Analogy Spelling Bee: Today's Spelling Bee Kids' Word Quiz: resilient Crossword: Crossword Puzzle Guide Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language

Find definitions for: