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Pronunciation varies by accent · noun
The part of aviation dealing with seaplanes and floatplanes..
Use hydroaviation when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Hydroaviation means The part of aviation dealing with seaplanes and floatplanes..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use hydroaviation where its definition matches the intended context.
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