Webster's 1913 Dictionary
OSCULANT
Os "cu *lant, a. Etym: [L. osculans, -antis, p. pr. of osculari to kiss. See Osculate. ]
1. Kissing; hence, meeting; clinging.
2. (Zoöl.)
Defn: Adhering closely; embracing; -- applied to certain creeping animals, as caterpillars.
3. (Biol.)
Defn: Intermediate in character, or on the border, between two genera, groups, families, etc. , of animals or plants, and partaking somewhat of the characters of each, thus forming a connecting link; interosculant; as, the genera by which two families approximate are called osculant genera.