any crustacean of the order Decapoda, having five pairs of walking legs, including the crabs, lobsters, crayfish, prawns, and shrimps.
any dibranchiate cephalopod having ten arms, as the cuttlefish or squid.
(initial capital letter) a steam locomotive having a two-wheeled front truck, ten driving wheels, and no rear truck.


belonging or pertaining to the decapods.
having ten feet or legs.

Origin of decapod

First recorded in 1825–35, decapod is from the New Latin word Decapoda name of the order. See deca-, -pod
Related formsde·cap·o·dan [duh-kap-uh-dn] /dəˈkæp ə dn/, adjective, nounde·cap·o·dous, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for decapod

decennary, decennium, decagon, decade, decemvir, decemvirate

Examples from the Web for decapod

Historical Examples of decapod

British Dictionary definitions for decapod



any crustacean of the mostly marine order Decapoda, having five pairs of walking limbs: includes the crabs, lobsters, shrimps, prawns, and crayfish
any cephalopod mollusc of the order Decapoda, having a ring of eight short tentacles and two longer ones: includes the squids and cuttlefish


of, relating to, or belonging to either of these orders
(of any other animal) having ten limbs
Derived Formsdecapodal (dɪˈkæpədəl), decapodan or decapodous, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for decapod

1835 as a type of crustacean having 10 legs, from French décapode (1806), from Modern Latin Decapoda (animalia), from Greek dekapoda, neuter plural of dekapous "ten-footed" (see ten + foot (n.)). From 1888 as a type of locomotive.

Online Etymology Dictionary, © 2010 Douglas Harper

decapod in Science



Any of various crustaceans of the order Decapoda, characteristically having ten legs, each joined to a segment of the thorax. Crabs, hermit crabs, lobsters, and shrimp are decapods.
A cephalopod mollusk, such as a squid or cuttlefish, having ten armlike tentacles.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.