2. inflection the process of adding affixes to or changing the shape of a base to give it a different syntactic function without changing its form class, as in forming served from serve, sings from sing, or harder from hard
3. inflection an affix added in this process, as the -s in dogs or the -ed in played.
1. Inflection the namegiven to the changes in the end of words to indicate relations, not so common in English—being usually expressed among us by prepositions—as in Latin, Greek, and other languages, but occurring in English as king's, mine, ours, to indicate possession; inflection in nouns is called declension, and in verbs conjugation.
Definitions of Inflection 
