Definition of amphipod
: any of a large order (Amphipoda) of small crustaceans (such as the sand flea) with a laterally compressed body
Origin and Etymology of amphipod
ultimately from Greek amphi- + pod-, pous foot — more at foot
First Known Use: 1833
Seen and Heard
What made you want to look up amphipod? Please tell us where you read or heard it (including the quote, if possible).