[gen.i.tive] adj [ME, fr. L genetivus, genitivus, lit., of generation (erroneous translation of Gk genikos genitive), fr. genitus] (14c) 1: of, relating to, or constituting a grammatical case marking typically a relationship of possessor or source--compare possessive
2: expressing a relationship that in some inflected languages is often marked by a genitive case--used esp. of English prepositional phrases introduced by of -- genitive n