Ŏr'nĭ-thŏl'o-gy, n.
n. [Fr. ornithologie, Sp. & It. ornitologia, from Gr. ὄρνις, ὄρνιθος, bird, and λόγος, discourse.] That branch of natural science which investigates and treats of the form, structure, and habits of birds.
n. [Fr. ornithologie, Sp. & It. ornitologia, from Gr. ὄρνις, ὄρνιθος, bird, and λόγος, discourse.] That branch of natural science which investigates and treats of the form, structure, and habits of birds.