noun

submarine

submarine

The submarine descended into the deep ocean.

The submarine descended into the deep ocean.

I ordered a large submarine sandwich for lunch.

I ordered a large submarine sandwich for lunch.

a/the submarine a watercraft capable of independent operation underwater A submarine can stay underwater for months.

Synonyms: sub, U-boat

From Latin `sub-` 'under' + `marinus` 'of the sea'. Literally 'under the sea'.

Break it down: `sub-` (under) + `marine` (sea). A boat that goes under the sea.

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