different between polyphyodont vs polyphyodonty

English

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

polyphyodont (plural polyphyodonts)

Any animal whose teeth are continuously replaced.
Elephants and manatees are unusual among mammals because they are polyphyodonts. Most mammals are diphyodonts, replacing their teeth only once in their lives.

polyphyodonty (uncountable)

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