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Pronunciation varies by accent · noun
(paleontology) Any member of the Perisphinctoidea superfamily of ammonites..
Use perisphinctoid when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Perisphinctoid means (paleontology) Any member of the Perisphinctoidea superfamily of ammonites..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use perisphinctoid where its definition matches the intended context.
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