I. adjective Date: 1613 being or carried on under the sea or under the surface of the sea , designed for use under the surface of the sea , II. adverb or ~s Date: 1645 under the sea ; beneath the surface of the sea
UNDERSEA
Meaning of UNDERSEA in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012