Grison vittatus gri·son·vit·tatus uncommon noun 1. carnivore of Central America and South America resembling a weasel with a grayish-white back and dark underparts SynonymsgrisonGrison vittatusGalictis vittatus Related words Broader terms musteline mammal Parts genus Grison WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.