O*pin"ion*a*tive, a. 1. Unduly attached to one's own opinions;
opinionated. Milton.
2. Of the nature of an opinion; conjectured. [Obs.] "Things both
opinionative and practical." Bunyan. -- O*pin"ion*a*tive*ly, adv. --
O*pin"ion*a*tive*ness, n.
O*pin"ion*a`tor (?), n. An opinionated person; one given to conjecture.
[Obs.] South.
O*pin"ioned (?), a. Opinionated; conceited.
His opinioned zeal which he thought judicious.
Milton.
O*pin"ion*ist (?), n. [Cf. F. opinioniste.] One fond of his own
notions, or unduly attached to his own opinions. Glanvill.
O*pip"a*rous (?), a. [L. opiparus, fr. ops, opis, riches + parare to
provide.] Sumptuous. [Obs.] -- O*pip"a*rous*ly, adv. [Obs.] E.
Waterhouse.
Op`i*som"e*ter (?), n. [Gr. &?; backwards + -meter.] An instrument with
a revolving wheel for measuring a curved line, as on a map.
||O*pis"thi*on (?), n. [NL., fr. Gr. &?; hinder.] (Anat.) The middle of
||the posterior, or dorsal, margin of the great foramen of the skull.
{ ||O*pis`tho*bran"chi*a (?), O*pis`tho*bran`chi*a"ta (?), } n. pl.
[NL., from Gr. &?; behind + &?; gills.] (Zoöl.) A division of gastropod
Mollusca, in which the breathing organs are usually situated behind the
heart. It includes the tectibranchs and nudibranchs.
O*pis`tho*bran"chi*ate (?), a. (Zoöl.) Of or pertaining to the
Opisthobranchiata. -- n. One of the Opisthobranchiata.
{ O*pis`tho*cœ"li*an (?), O*pis`tho*cœ"lous (?), } a. [Gr. &?; behind +
koi^los hollow,] (Anat.) Concave behind; -- applied especially to
vertebræ in which the anterior end of the centrum is convex and the
posterior concave.
O*pis"tho*dome (?), n. [L. opisthodomus, Gr. &?;; &?; behind + do`mos
house: cf. F. opisthodome.] (Arch.) A back chamber; especially, that
part of the naos, or cella, farthest from the main entrance, sometimes
having an entrance of its own, and often used as a treasury.
||O*pis`tho*glyph"a (?), n. pl. [NL., from Gr. &?; behind + &?; to
||carve.] (Zoöl.) A division of serpents which have some of the
||posterior maxillary teeth grooved for fangs.
Op`is*thog"ra*phy (?), n. [Gr. &?; behind + -graphy.] A writing upon
the back of anything, as upon the back of a leaf or sheet already
written upon on one side. [R.] Scudamore.
||Op`is*tho"mi (?), n. pl. [NL., fr. Gr. &?; behind + &?; the
||shoulder.] (Zoöl.) An order of eellike fishes having the scapular
||arch attached to the vertebræ, but not connected with the skull.
O*pis`tho*pul"mo*nate (?), a.[Gr. &?; behind + E. pulmonate.] (Zoöl.)
Having the pulmonary sac situated posteriorly; -- said of certain
air-breathing Mollusca.
Op`is*thot"ic (?), n. [Gr. &?; behind + &?;, &?;, ear.] (Anat.) The
inferior and posterior of the three elements forming the periotic bone.
||Op`is*thot"o*nos (?), n. [NL., from Gr. &?; backwards + &?; a
||stretching.] (Med.) A tetanic spasm in which the body is bent
||backwards and stiffened.
O*pit`u*la"tion (?), n. [L. opitulatio, fr. opitulari to bring help.]
The act of helping or aiding; help. [Obs.] Bailey.
O"pi*um (?), n. [L., fr. Gr. &?; poppy juice, dim. of &?; vegetable
juice.] (Chem.) The inspissated juice of the Papaver somniferum, or
white poppy.
Opium is obtained from incisions made in the capsules of the plant, and
the best flows from the first incision. It is imported into Europe and
America chiefly from the Levant, and large quantities are sent to China
from India, Persia, and other countries. It is of a brownish yellow
color, has a faint smell, and bitter and acrid taste. It is a stimulant
narcotic poison, which may produce hallicinations, profound sleep, or
death. It is much used in medicine to soothe pain and inflammation, and
is smoked as an intoxicant with baneful effects.