ORNITHORHYNCHUS
Or`ni*tho*rhyn"chus, n. Etym: [NL., fr. Gr. (Zoöl.)
Defn: See Duck mole, under Duck.
ORNITHOSAURIA
Or*ni`tho*sau"ri*a, n. pl. Etym: [NL. See Ornitho-, and Sauria.]
(Paleon.)
Defn: An order of extinct flying reptiles; — called also
Pterosauria.
ORNITHOSCELIDA
Or*ni`tho*scel"i*da, n. pl. Etym: [NL., fr. Gr. (Zoöl.)
Defn: A group of extinct Reptilia, intermediate in structure (especially with regard to the pelvis) between reptiles and birds. — Or`ni*tho*scel"i*dan, a.
ORNITHOSCOPY
Or`ni*thos"co*py, n. Etym: [Ornitho- + -scopy: cf. Gr.
Defn: Observation of birds and their habits. [R.] De Quincey.
ORNITHOTOMICAL
Or`ni*tho*tom"ic*al, a.
Defn: Of or pertaining to ornithotomy.