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egg case

Entomology, ootheca.
Entomology, egg sac.
Origin of egg case
1840-50 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for egg case
  • Two hundred or more mantis nymphs may emerge from a single egg case.
  • Larval appendages can be seen at the top of the egg case.
  • One case being investigated is the sea turtle egg case mentioned previously.
  • When the egg hatches, the larva stays in its hanging egg case, reaches into the pile of caterpillars and begins feeding.
egg case in Science
egg case  
  1. A protective capsule of certain animals, such as insects and mollusks, that contains eggs.

  2. See egg sac.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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