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Aqua-Lung
aqua regia
aqua vitae
aquacrop
aquaculture
aquadynamic
aquaerobics
aquamarine
aquanaut
aquapasto
aquaphobia
aquaplane
aquarelle
aquaria
aquarist
aquarium
Aquarius
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aquanaut

aq·ua·naut [ ákwə nàwt, kwə nàwt ] (plural aq·ua·nauts)


noun 
Definition:
 
somebody spending time underwater: somebody with training and equipment to spend long periods working or swimming underwater

[Late 19th century. <aqua- + Greek nautēs "sailor," after Argonaut]
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