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Pronunciation varies by accent · noun
(biology) An ectotherm that obtains its energy by basking in the sun, as butterflies..
Use heliotherm when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Heliotherm means (biology) An ectotherm that obtains its energy by basking in the sun, as butterflies..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use heliotherm where its definition matches the intended context.
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