Source : Webster's Revised Unabridged Dictionary (1913)

Nidulant \Nid"u*lant\, a. [L. nidulans, p. pr.: cf. F.
   {Nidulant}.]
   1. Nestling, as a bird in itss nest.

   2. (Bot.) Lying loose in pulp or cotton within a berry or
      pericarp, as in a nest.