adj, noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   Any arthropod of the subphylum Crustacea, including lobsters, crabs, shrimp, barnacles and woodlice, traditionally excluding hexapods.
2. 2
   any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton wordnet

Adjective

1. 1
   Of, relating to, or characteristic of the subphylum Crustacea.

   "In cooperation with the Bureau of Fisheries he made several motion pictures of crustacean life."

Adjective

1. 1
   of or belonging to the class Crustacea wordnet

Synonyms

All synonyms

crustacealcrustaceouscrustaceousinvertebratemarine animal

Example

More examples

"The red king crab is a large crustacean."

Etymology

From taxonomic name Crustacea + -an.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.