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surface-to-underwater

American

[sur-fis-too-uhn-der-waw-ter, -wot-er] / ˈsɜr fɪs tuˈʌn dərˌwɔ tər, -ˌwɒt ər /

adjective

(of a missile, message, etc.) traveling from the surface of the earth to a target underwater.

adverb

from the surface of the earth to a target underwater.

Etymology

Origin of surface-to-underwater

First recorded in 1945–50

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.