hydronaut

[ hahy-druh-nawt, -not ]

noun

1. a person trained to work in deep-sea vessels for research and rescue purposes.

hydronaut

/ ˈhaɪdrəʊˌnɔːt /

noun

1. navy a person trained to operate deep submergence vessels

Word History and Origins

Origin of hydronaut¹

An Americanism dating back to 1965–70; hydro- ¹ + (aero)naut

Word History and Origins

Origin of hydronaut¹

C20: from Greek, from hydro- + -naut, as in aeronaut, astronaut