Breadcrumb Home > Dictionary > Index C Constans I: Meaning and Definition of Find definitions for: Con•stans I Pronunciation: (kon'stanz), [key] — (Flavius Julius Constans) a.d. c323–350, emperor of Rome 337–350 (son of Constantine I). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. constancy constant TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: anomie Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language