Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Biology Intermediate in characteristics between two similar or related taxonomic groups.
  • adj. Closely adhering or joined; embracing.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Kissing; hence, touching or meeting; clinging.
  • adj. Adhering closely; applied to certain creeping animals, such as caterpillars.
  • adj. Intermediate between two genera, groups, families, etc., and having some of the characteristics of each; interosculant.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Kissing; hence, meeting; clinging.
  • adj. Adhering closely; embracing; -- applied to certain creeping animals, as caterpillars.
  • adj. 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.

from The Century Dictionary and Cyclopedia

  • Kissing.
  • In biology, touching or intermediate between two or more groups; inosculant; intergrading: said of genera, families, etc., which connect or link others together.
  • Adhering closely; embracing: applied to certain creeping animals, as caterpillars.
  • n. In mathematics, the invariant whose vanishing signifies that the quantics all vanish, and that there is a syzygetic relation between the tangential qualitics.

Etymologies

Latin ōsculāns, ōsculant-, present participle of ōsculārī, to kiss; see osculate.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin osculans, osculantis, present participle of osculari to kiss. See osculate. (Wiktionary)

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