inflectional morphology; the part of grammar concerned with changes in the form of words by internal modification or by affixation, for the expression of tense, person, case, number, etc
Word origin
C15: from Latin accidentia accidental matters, hence inflections of words, from accidere to happen. See accident
accidence in American English
(ˈæksədəns)
noun
1.
the part of grammar that deals with the inflection of words
2.
the elementary or first parts of a subject; rudiments
Word origin
ME accidens, inflection < L accidentia, that which happens < accidens: see accident