Dictionary
2 ENTRIES FOUND:

underwater

adjective un·der·wa·ter \ˌən-dər-ˈw-tər, -ˈwä-\

: located, used, done, or happening below the surface of water

Full Definition of UNDERWATER

1
:  lying, growing, worn, performed, or operating below the surface of the water <underwater plants>
2
:  being below the waterline of a ship
3
:  having, relating to, or being a mortgage loan for which more is owed than the property securing the loan is worth
underwater adverb

Examples of UNDERWATER

  1. <underwater plants don't require as much light to grow as surface plants>
  2. <a vessel designed for underwater exploration>

First Known Use of UNDERWATER

1627

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