Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An elastic substance consisting of cross-linked protein chains, found in parts of the cuticle of many insects.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun biology An elastic protein found in the exoskeletons of insects, facilitating, for example, folding wings or jumping relatively great distances.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[resil(e) + –in.]

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