Found 2 items, similar to vigesimal.
English → English (WordNet) Definition: vigesimal vigesimal adj : relating to or based on the number twenty
English → English (gcide) Definition: Vigesimal Vigesimal \Vi*ges"i*mal\, a. [L. vigesimus twentieth, from viginti twenty.] Twentieth; divided into, or consisting of, twenties or twenty parts. --Tylor. [1913 Webster]