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Pronunciation varies by accent · noun
(zoology) That portion of the head of an annelid situated behind the mouth.
Use metastomium when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Metastomium means (zoology) That portion of the head of an annelid situated behind the mouth.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use metastomium where its definition matches the intended context.
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