Por·​cel·​lio | \ pȯrˈselēˌō \

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.

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for Porcellio

New Latin Porcellion-, Porcellio, from Latin, wood louse, sow bug, from porcellus little pig, diminutive of porcus pig

Keep scrolling for more

Learn More about Porcellio

Statistics for Porcellio

Cite this Entry

“Porcellio.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/Porcellio. Accessed 27 January 2020.

Comments on Porcellio

What made you want to look up Porcellio? Please tell us where you read or heard it (including the quote, if possible).


one that suddenly gains wealth or power

Get Word of the Day daily email!

Test Your Vocabulary

Intact Latin Quiz

  • roman tablet
  • What did focus mean in Latin?
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!