hydroairplane

[hahy-droh-air-pleyn]

noun

Origin of hydroairplane

First recorded in 1905–10; hydro-¹ + airplane

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Having detected a submerged enemy craft the hydroairplane flies over it, dropping a bomb.
Dave Darrin and the German Submarines
H. Irving Hancock
Presently the hydroairplane again caught sight of the prey it was stalking.
Dave Darrin and the German Submarines
H. Irving Hancock