Or-nith'o-măn'cy, n.

noun

n. [Fr. ornithomancie, Sp. ornitomancia, It. ornitomancia, Gr. ὀρνιθομαντεία, fr. ὄρνις, ὄρνιθος, bird, and μαντεία, divination.] A species of divination by means of birds, their flight, &c.

Ornithomancy grows into an elaborate science. De Quincey.