ORNITHODELPHIA
Or*ni`tho*del"phi*a, n. pl. Etym: [NL., fr. Gr.

Defn: Same as Monotremata.
— Or`ni*tho*del"phid, a.

ORNITHOIDICHNITE
Or`ni*thoid*ich"nite, n. Etym: [Ornitho- + -oid + Gr. (Paleon.)

Defn: A fossil track resembling that of a bird. Hitchcock.

ORNITHOLITE Or*nith"o*lite, n. Etym: [Ornitho- + -lite.] (Paleon.) (a) The fossil remains of a bird. (b) A stone of various colors bearing the figures of birds.

ORNITHOLOGIC; ORNITHOLOGICAL Or`ni*tho*log"ic, Or`ni*tho*log"ic*al, a. Etym: [Cf. F. ornithologique.]

Defn: Of or pertaining to ornithology.

ORNITHOLOGIST
Or`ni*thol"o*gist, n. Etym: [Cf. F. ornithologiste.]

Defn: One skilled in ornithology; a student of ornithology; one who describes birds.

ORNITHOLOGY
Or`ni*thol"o*gy, n. Etym: [Ornitho- + -logy: cf. F. ornithologie.]