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

accidence \ac"cidence\, n. a corruption of eng. accidents, pl.
   of accident. see accident, 2.
   1. the accidents, of inflections of words; the rudiments of
      grammar. --milton.
      1913 webster

   2. the rudiments of any subject. --lowell.
      1913 webster
see also:
accident 

[2] : WordNet (r) 2.0

accidence
     n : the part of grammar that deals with the inflections of words
         syn: inflectional morphology
see also:
inflectional morphology 

Accidence >> A Words
Accidence, definition of term: Accidence
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