noun hy·dro·naut \ˈhīdrəˌnȯt, -nät\

Definition of hydronaut



  1. :  a member of the crew of a deep-sea vehicle (such as a bathyscaphe) other than a submarine

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Origin and Etymology of hydronaut

hydr- + -naut (as in astronaut)

Seen and Heard

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capable of being understood in two ways

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