Other forms: submarines
A submarine is a vessel that travels deep under the surface of the sea. A nuclear submarine, the submarine surfaced, life on a submarine.
It is often shortened to sub. Submarines dive by flooding ballast tanks and surface by blowing them with compressed air. Nuclear-powered ones can stay under for months, limited by food rather than fuel or air. In American English a submarine is also a long filled roll — a sub. Note submarine cable, which carries almost all intercontinental internet traffic and is the reason the word appears in technology news.
1nounsubmarineA vessel that travels under the surface of the sea.
“The submarine stayed down for about eleven weeks.”
synonyms: sub
2adjectiveexistingExisting or happening under the sea.
“A submarine cable runs from that beach to Denmark.”
submarine is an underwater vessel.
Also accepted in games: sub
Middle English
marin
English
marine
English, today
submarine
Built from
From sub- + marine. marine comes from Middle English marin. Recorded since c.1420 as Middle English marin, borrowed from Middle French marin, from Old French -, from Latin marinus (“of the sea”), itself from mare (“sea”), from Proto-Indo-European móri (“body of water, lake”) (cognate with Old English mere (“sea, lake, pool, pond”), Dutch meer, German Meer, all from Proto-Germanic mari). The modern pronunciation is presumably due to the influence of modern French marine, feminine singular of marin.
Etymology from Wiktionary, CC BY-SA