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Pronunciation varies by accent · noun
(zoology, obsolete) Any member of the Murchisoniacea, an extinct superfamily of gastropod molluscs..
Use murchisoniacean when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Murchisoniacean means (zoology, obsolete) Any member of the Murchisoniacea, an extinct superfamily of gastropod molluscs..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use murchisoniacean where its definition matches the intended context.
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