-COOH

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  carboxyl group \car*box"yl group`\ (k[aum]r*b[o^]ks"[i^]l
     gr[=oo]p), n. (Chem.)
     a monovalent organic radical (written {-COOH}, {-CO2H} or
     {-CO.OH}) whose presence confers acidic properties on the
     compound containing it; -- called also {carboxylic group}.
     Monocarboxylic acids (such as acetic acid or butyric acid)
     have one carboxyl group, dicarboxylic acids (such as oxalic
     acid or malonic acid) have two, tricarboxylic acids (such as
     citric acid) have three. It is weakly acidic, the pKa of
     acetic acid being 4.75.
     [PJC]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  carboxylic \car`box*yl"ic\ (k[aum]r`b[o^]ks*[i^]l"[i^]k), adj.
     (Chem.)
     of or pertaining to the {carboxyl group}; having a carboxyl
     group (written {-COOH}, {-CO2H} or {-CO.OH}); as, carboxylic
     acids are weakly acidic.
  
     Syn: carboxyl.
          [WordNet 1.5]