Definition of euphausiid
: any of an order (Euphausiacea) of small usually luminescent malacostracan crustaceans that resemble shrimps and in some areas form an important element in marine plankton
Origin of euphausiid
New Latin Euphausia, genus of crustaceans
First Known Use: 1885
Learn More about euphausiid
Britannica.com: Encyclopedia article about "euphausiid"
Seen and Heard
What made you want to look up euphausiid? Please tell us where you read or heard it (including the quote, if possible).