Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
Origin of Vicenary
Latin vīcēnāriusfromvīcēnītwenty eachfromvīgintītwentywīkm̥tī- in Indo-European roots
American Heritage Dictionary of the English Language, 5th Edition
Latinvicenarius, from viceni twenty each; akin to viginti twenty.