nidIfication

[Lat. nidificatio, from nidi. ficatus, pa. par. of nidifico.] 1. The act of making or building nests. "The variation of instinct in the nidification of birds was long ago shown by Audubon."-Lindsay: Mind in the Lower Animals , i. 133. 2. A nest. "A great affinity betwixt the nidifications of birds and these conglomerations of the thread of the silk-worm."More: Immort. Soul , bk. iii., ch. xiii.