| Part of Speech | Definition | |
| Adjective | 1. Consisting of twelve years.[Websters]
2. Virtually never used base adjective of the rarely used adverb duodecennially.[Eve - graph theoretic] | |
| Adverb Form (duodecennially) | 1. Virtually never used adverbial inflection of the rarely used adjective duodecennial.[Eve - graph theoretic] | |
Source: Webster's Revised Unabridged Dictionary (1913), compiled from various sources, under license. | Top | |
Date "DUODECENNIAL" was first used in popular English literature: sometime before 1914. (references) |
| Etymology:Duodecennial \Du`o*de*cen"ni*al\, adjective. [Latin expression duodecennis; duodecim twelve annus year.]. (references) |
