Definition of Armadillidiidae
: a cosmopolitan family (type genus Armadillidium) of terrestrial isopods having arched bodies that can be rolled into a ball and including all the wood lice
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Origin and Etymology of armadillidiidae
New Latin, from Armadillidium, type genus (from Armadillo + -idium) + -idae; from the habit of rolling the body up into a ball when touched
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