Inflection, the name given 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.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Inferno * Influenza