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hydrobomb

American  
[hahy-druh-bom] / ˈhaɪ drəˌbɒm /

noun

  1. an aerial torpedo equipped with a rocket engine that propels it after the torpedo has entered the water.

Etymology

Origin of hydrobomb

hydro- 1 + bomb

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.