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carboxyl group

/kɑːˈbɒksaɪl; -sɪl/
noun
1.
the monovalent group –COOH, consisting of a carbonyl group bound to a hydroxyl group: the functional group in organic acids
Word Origin
C19 carboxyl, from carbo- + oxy-² + -yl
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Value for carboxyl

22
24
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