chronogram: Meaning and Definition of

chron•o•gram

Pronunciation: (kron'u-gram"), [key]
— n.
  1. an inscription in which certain Roman numeral letters express a date or epoch on being added together by their values.
  2. a record made by a chronograph.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.