Openwork
O″pen‐work′ (?), n. 1. Anything so constructed or manufactured (in needlework, carpentry, metal work, etc.) as to show openings through its substance; work that is perforated or...
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.
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Opera
Op″er‐a (ŏp″ẽr‐ȧ), n. [It., fr. opera work, composition, opposed to an improvisation, fr. L. opera pains, work, fr. opus, operis, work, labor: cf. F. opéra. See Operate.] 1. A d...
Operable
Op″er‐a‐ble (?), a. Practicable.
Operameter
Op′er‐am″e‐ter (?), n. [L. opus, operis, pl. opera work + -meter.] An instrument or machine for measuring work done, especially for ascertaining the number of rotations made by ...
Operance
{ Op″er‐ance (?), Op″er‐an‐cy (?), } n. The act of operating or working; operation.
Operand
Op″er‐and (?), n. [From neuter of L. operandus, gerundive of operari. See Operate.] (Math.) The symbol, quantity, or thing upon which a mathematical operation is performed; — ca...
Operant
Op″er‐ant (?), a. [L. operans, p. pr. of operari. See Operate.] Operative. Shak. — n. An operative person or thing. Coleridge.
Operate
Op″er‐ate (?), v. i. [imp. & p. p.Operated (?); p. pr. & vb. n.Operating.] [L. operatus, p. p. of operari to work, fr. opus, operis, work, labor; akin to Skr. apas, and also to ...
Operate (2)
Op″er‐ate, v. t. 1. To produce, as an effect; to cause.The same cause would operate a diminution of the value of stock. A. Hamilton.2. To put into, or to continue in, operation ...
Operatic
{ Op′er‐‐at″ic (?), Op′er‐at″ic‐al (?), } a. Of or pertaining to the opera or to operas; characteristic of, or resembling, the opera.
Operation
Op′er‐a″tion (?), n. [L. operatio: cf. F. opération.] 1. The act or process of operating; agency; the exertion of power, physical, mechanical, or moral.The pain and sickness cau...
Operative
Op″er‐a‐tive (?), a. [Cf.L. operativus, F. opératif.] 1. Having the power of acting; hence, exerting force, physical or moral; active in the production of effects; as, an operat...
Operative (2)
Op″er‐a‐tive, n. A skilled worker; an artisan; esp., one who operates a machine in a mill or manufactory.
Operatively
Op″er‐a‐tive‐ly, adv. In an operative manner.
Operator
Op″er‐a′tor (?), n. 1. One who, or that which, operates or produces an effect.2. (Surg.) One who performs some act upon the human body by means of the hand, or with instruments....
Operatory
Op″er‐a‐to‐ry (?), n. A laboratory.
Opercle
O″per‐cle (?), n. [Cf. F. opercule. See Operculum.] 1. (Anat.) Any one of the bony plates which support the gill covers of fishes; an opercular bone.2. (Zoöl.) An operculum.
Opercula
O‐per″cu‐la (?), n. pl. See Operculum.
Opercular
O‐per″cu‐lar (?), a. Of, pertaining to, or like, an operculum.
Opercular (2)
O‐per″cu‐lar, n.(Anat.) The principal opercular bone or operculum of fishes.
Operculate
{ O‐per″cu‐late (?), O‐per″cu‐la′ted (?), } a. [L. operculatus, p. p. of operculare to furnish with a lid, fr. operculum lid.] 1. (Bot.) Closed by a lid or cover, as the capsule...
Operculiferous
O‐per′cu‐lif″er‐ous (?), a. [Operculum + -ferous.] (Zoöl.) Bearing an operculum.
Operculiform
O‐per″cu‐li‐form (?), a. [L. operculum a cover + -form: cf. F. operculiforme.] Having the form of a lid or cover.
Operculigenous
O‐per′cu‐lig′e‐nous (?), a. [Operculum + -genous.] (Zoöl.) Producing an operculum; — said of the foot, or part of the foot, of certain mollusks.
Operculum
O‐per″cu‐lum (?), n.; pl. L. Opercula (#), E. Operculums (#). [L., a cover or lid, fr. operire to cover.] 1. (Bot.) (a) The lid of a pitcherform leaf. (b) The lid of the urnlike...
Operetta
Op′er‐et″ta (?), n. [It., dim. of opera.] (Mus.) A short, light, musical drama.
Operose
Op″er‐ose′ (?). a. [L. operosus, fr. opera pains, labor, opus, operis, work, labor.] Wrought with labor; requiring labor; hence, tedious; wearisome. “Operose proceeding.” Burke....