\Os"cu*lant\, a. [L. osculans, -antis, p. pr. of
osculari to kiss. See {Osculate}.]
1. Kissing; hence, meeting; clinging.
2. (Zo["o]l.) Adhering closely; embracing; -- applied to
   certain creeping animals, as caterpillars.
3. (Biol.) 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.