genitive [±Genitive] a grammatical feature in many languages used to mark the case of a noun being used as a possessive modifier of another noun in the sentence; in most declensions in Latin g. has the form of the root onto which it is appropriate to attach the other case suffixes, e.gg., “Romae” (1st declension), “Julii” (2nd declension); cf. Chapter 1, §3, ¶3 & Chapter 3, §1, ¶6