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Pronunciation varies by accent · noun
Any form of petroleum (or a similar substitute) made biologically (especially from algae).
Use biopetroleum when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Biopetroleum means Any form of petroleum (or a similar substitute) made biologically (especially from algae).
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use biopetroleum where its definition matches the intended context.
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