marine (adj.) Look up marine at Dictionary.com
early 15c., from M.Fr. marin (fem. marine), from O.Fr. marin, from L. marinus (fem. marina) "of the sea," from mare (gen. maris) "sea," from PIE *mori-/*mari- "body of water, lake." Cognate with O.E. mere "sea, lake, pool, pond," from P.Gmc. *mari. Noun meaning "soldier who serves on a ship" is from 1670s, from Fr. marine, from the O.Fr. adjective.