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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
As in crustaceans, autotomy must be done before a critical period so that there is sufficient time to regenerate the appendage before the next ecdysis.
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.
I could not assess at what point during the predation encounters the lizards employed autotomy.
The division of a protozoan into two cells and the splitting of a worm into two halves may be regarded as cases of autotomy.
Because red king crabs can autotomize injured legs, crabs with a fresh autotomy were classified separately from those with other leg injuries.
Even the shedding of antlers by deer may be classified as an example of autotomy.

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