The Collaborative International Dictionary
Psittaceous
Psittaceous \Psit*ta"ceous\, Psittacid \Psit"ta*cid\, a. [L. psittacus a parrot, Gr. ?: cf. F. psittacide.] (Zo["o]l.) Of or pertaining to the parrots, or the Psittaci. -- n. One of the Psittaci.
Wiktionary
psittaceous
a. (context zoology English) Of or relating to psittacids, a group of parrots.