hydrospace

[ hahy-druh-speys ]

noun

1. the regions beneath the surface of the oceans and seas.

hydrospace

/ hī′drə-spās′ /

1. The regions beneath the ocean's surface, especially when considered as an area to be studied, as in marine mammal research or sonar mapping of the ocean floor.

Word History and Origins

Origin of hydrospace¹

First recorded in 1960–65; hydro- ¹( def ) + space ( def )