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Pronunciation varies by accent · noun
(organic chemistry, especially in combination) The univalent radical derived from retinol.
Use retinyl when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Retinyl means (organic chemistry, especially in combination) The univalent radical derived from retinol.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use retinyl where its definition matches the intended context.
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