Pronunciation: (dOO"u-des'u-mul, dyOO"-), [key]
1. pertaining to twelfths or to the number 12.
2. proceeding by twelves.
1. one of a system of numbers based on the number 12.
2. one of 12 equal parts.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.