marigram

[ mar-i-gram ]
/ ˈmær ɪˌgræm /

noun

a graphic representation from a marigraph.

Origin of marigram

< Latin mari- (combining form of mare sea) + -gram1

British Dictionary definitions for marigram

marigram
/ (ˈmærɪˌɡræm) /

noun

a graphic record of the tide levels at a particular coastal station

Word Origin for marigram

from Latin mare sea + -gram