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What does autotomy mean?

Looking for the meaning or definition of the word autotomy? Here's what it means.

Noun
  1. (chiefly zoology) The spontaneous removal of a limb, tail etc, especially by some invertebrates as a self-defense mechanism.
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Examples
I could not assess at what point during the predation encounters the lizards employed autotomy.
Even the shedding of antlers by deer may be classified as an example of autotomy.
A feature which the skink shares with many other lizards is autotomy, that is the shedding of the tail in order to flee from the predator.
Through a process called autotomy, muscles can contract violently along the base of an appendage, breaking off the limb.
The nerve, however, is severed at the preformed autotomy breakage plane and the nerve stub retracts into the coxal stump.
This is perhaps because any injury between the tip of the meropodite and the point of autotomy invariably causes a breakage at the latter point.

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