carboxyl

from WordNet (r) 3.0 (2006)

carboxyl
    adj 1: relating to or containing the carboxyl group or carboxyl
           radical [syn: {carboxyl}, {carboxylic}]
    n 1: the univalent radical -COOH; present in and characteristic
         of organic acids [syn: {carboxyl}, {carboxyl group}]

from The Collaborative International Dictionary of English v.0.48

Oxalyl \Ox"a*lyl\, n. [Oxalic + -yl.] (Chem.)
   (a) A hydrocarbon radical ({C2O2}) regarded as a residue of
       oxalic acid and occurring in derivatives of it.
   (b) An old name for {carbonyl}.
   (c) An old name for {carboxyl}.
       [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Carboxyl \Car*box"yl\ (k[aum]r*b[o^]ks"[i^]l), n. [Carbon +
   oxygen + -yl.] (Chem.)
   The complex radical, {CO.OH}, regarded as the essential and
   characteristic constituent which all oxygen acids of carbon
   (as formic, acetic, benzoic acids, etc.) have in common; --
   called also {oxatyl}.
   [1913 Webster]

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