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Pronunciation varies by accent · noun
Any of the primitive fishlike creatures, of the subphylum Cephalochordata, including the lancelets, that lack a true spine but have a notochord which, in the case of cephalochordates, reaches into the head, contrary to the Urochordata.
Use cephalochordate when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Cephalochordate means Any of the primitive fishlike creatures, of the subphylum Cephalochordata, including the lancelets, that lack a true spine but have a notochord which, in the case of cephalochordates, reaches into the head, contrary to the Urochordata.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use cephalochordate where its definition matches the intended context.
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