Cricetidae cri·ce·ti·dae uncommon noun 1. mostly small New World rodents including New World mice and lemmings and voles and hamsters Synonymsfamily Cricetidae Related words Broader terms mammal family Parts Myomorpha Part of New World mouseReithrodontomysPeromyscusBaiomysOnychomysOndatraNeofiberSigmodon WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.