adjective
(also ptilopedic)
rare Ornithology Of a bird: hatched with a complete covering of down. Contrasted with psilopaedic.
Origin
Late 19th century; earliest use found in Elliott Coues (1842–1889), naturalist and historian. From ptilo- + ancient Greek παιδ-, παῖς child + -ic, after scientific Latin ptilopaedes.
Are You Learning English? Here Are Our Top English Tips