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

tartness \tart"ness\, n.
   the quality or state of being tart.
   1913 webster

   syn: acrimony; sourness; keenness; poignancy; severity;
        asperity; acerbity; harshness. see acrimony.
        1913 webster
see also:
acrimony 

[2] : WordNet (r) 2.0

tartness
     n 1: the taste experience when vinegar or lemon juice is taken
          into the mouth syn: sour, sourness
     2: a sharp sour taste syn: acerbity
see also:
sour sourness acerbity 

Tartness >> T Words
Tartness, definition of term: Tartness
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