WordReference Random House Unabridged Dictionary of American English © 2026
chron•o•gram
(kron′ə gram′),USA pronunciation n.
chron•o•gram•mat•ic
(kron′ō grə mat′ik),USA pronunciation chron′o•gram•mat′i•cal, adj.
chron′o•gram•mat′i•cal•ly, adv.
chron′o•gram′ma•tist, n.
- Timean inscription in which certain Roman numeral letters express a date or epoch on being added together by their values.
- Timea record made by a chronograph.
- 1615–25; chrono- + -gram1
chron′o•gram′ma•tist, n.