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Pronunciation varies by accent · noun
(marine biology) A sac or other structure containing air and used for flotation by a marine organism, chiefly used in reference to those of kelps and siphonophores..
Use pneumatocyst when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Pneumatocyst means (marine biology) A sac or other structure containing air and used for flotation by a marine organism, chiefly used in reference to those of kelps and siphonophores..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use pneumatocyst where its definition matches the intended context.
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