Definition of idant in US English:

idant

noun

Biology
historical
  • Weismann's term for: each of the chromatin bodies in the nucleus of a reproductive cell, regarded as an aggregation of units of heredity.

Origin

Late 19th century; earliest use found in Edward Bagnall Poulton (1856–1943), zoologist. From German Idant from Id + -ant, arbitrary suffix.