Definition of Porcellio
: an Old World genus of terrestrial isopods that is the type of the family Porcellionidae and includes one form (P. scaber) which has been introduced into the U.S.
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Origin and Etymology of porcellio
New Latin Porcellion-, Porcellio, from Latin, wood louse, sow bug, from porcellus little pig, diminutive of porcus pig
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