os·cu·lar \ˈäskyələ(r)\adjective Etymology: New Latin oscularis, from Latin osculum little mouth, kiss + -aris -ar 1.: of, relating to, or concerned with kissing < oscular muscles > 2. a.: of or relating to an osculum b.: of or relating to a mouth • os·cu·lar·i·ty\ˌäskyəˈlarəd.ē\noun-es