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Pronunciation varies by accent · noun
A fully automatic projectile weapon similar to a machine gun, but firing shells instead of bullets and larger in calibre..
Use autocannon when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Autocannon means A fully automatic projectile weapon similar to a machine gun, but firing shells instead of bullets and larger in calibre..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use autocannon where its definition matches the intended context.
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