'Duodecimal' definitions:

Definition of 'duodecimal'

adjective

Based on twelve; "the duodecimal number system"

noun

One part in twelve equal parts [syn: one-twelfth, twelfth, twelfth part, duodecimal]

From: GCIDE

Duodecimal \Du`o*dec"i*mal\, a. [L. duodecim twelve. See Dozen.] Proceeding in computation by twelves; expressed in the scale of twelves. -- {Du`o*dec"i*mal*ly}, adv. [1913 Webster]

From: GCIDE

Duodecimal \Du`o*dec"i*mal\, n.
1. A twelfth part; as, the duodecimals of an inch. [1913 Webster]
2. pl. (Arch.) A system of numbers, whose denominations rise in a scale of twelves, as of feet and inches. The system is used chiefly by artificers in computing the superficial and solid contents of their work. [1913 Webster]