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/dɛlˈtɪdɪəm/ · noun
(conchology, now rare) The triangular space under the beak of many brachiopod shells..
Use deltidium when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Deltidium means (conchology, now rare) The triangular space under the beak of many brachiopod shells..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use deltidium where its definition matches the intended context.
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