aquanaut

Noun aquanaut has 2 senses

• aquanaut(n = noun.person) skin-diver - an underwater swimmer equipped with a face mask and foot fins and either a snorkel or an air cylinder; Array
is a kind of bather, natator, swimmer

• aquanaut(n = noun.person) oceanaut - a skilled worker who can live in underwater installations and participate in scientific research; Array
is a kind of skilled worker, skilled workman, trained worker