Share this entry
Hystricomorpha Syllabification: Hys·tri·co·mor·pha
Pronunciation: /ˌhistrikōˈmôrfə/

Definition of Hystricomorpha in English:

A major division of the rodents that includes the guinea pigs, porcupines, coypu, and their relatives. They occur chiefly in South America.
Example sentences
  • The Guinea Pig, Cavia porcellus, is a mammal of the order Rodentia, sub-order Hystricomorpha and family Caviidae.
  • The Old World members of this group are sometimes placed in a separate group called the porcupine-like rodents (Hystricomorpha).


Pronunciation: /ˈhistrikōˌmôrf/
noun& adjective
Example sentences
  • The myomorph and sciuromorph taxa are included in the Sciurognathi, while most hystricomorphs are in the Hystricognathi.
  • Nevertheless, hystricomorph rodents are an exception among mammals, possessing an insulin molecule with many amino acid substitutions.


Modern Latin (plural), from Latin hystrix, hystric- 'porcupine' (from Greek hustrix) + morphē 'form'.

Definition of Hystricomorpha in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources