Webster's Dictionary 1913

1270

Optician

Op‐ti″cian (?), n. [Cf. F. opticien. See Optic, a.]1. One skilled in optics. A. Smith.2. One who deals in optical glasses and instruments.

1271

Optics

Op″tics (?), n. [Cf. F. optique, L. optice, Gr. � (sc. �). See Optic.] That branch of physical science which treats of the nature and properties of light, the laws of its modifi...

1272

Optigraph

Op″ti‐graph (?), n. [Optic + -graph: cf. F. opticographe. See Optic, a.] A telescope with a diagonal eyepiece, suspended vertically in gimbals by the object end beneath a fixed ...

1273

Optimacy

Op″ti‐ma‐cy (?), n. [Cf. F. optimatie. See Optimate.]1. Government by the nobility. Howell.2. Collectively, the nobility.

1274

Optimate

Op″ti‐mate (?), a. [L. optimas, -atis, adj., optimates, n. pl., the adherents of the best men, the aristocrats, fr. optimus the best.] Of or pertaining to the nobility or aristo...

1275

Optimates

‖Op′ti‐ma″tes (?), n. pl. [L. See Optimate.] The nobility or aristocracy of ancient Rome, as opposed to the populares.

1276

Optime

Op″ti‐me (?), n. [L., adv. fr. optimus the best.] One of those who stand in the second rank of honors, immediately after the wranglers, in the University of Cambridge, England. ...

1277

Optimism

Op″ti‐mism (?), n. [L. optimus the best; akin to optio choice: cf. F. optimisme. See Option.]1. (Metaph.) The opinion or doctrine that everything in nature, being the work of Go...

1278

Optimist

Op″ti‐mist (?), n. [Cf. F. optimiste.]1. (Metaph.) One who holds the opinion that all events are ordered for the best.2. One who looks on the bright side of things, or takes hop...

1279

Optimistic

Op′ti‐mis″tic (?), a. 1. (Metaph.) Of or pertaining to optimism; tending, or conforming, to the opinion that all events are ordered for the best.2. Hopeful; sanguine; as, an opt...

1280

Optimity

Op‐tim″i‐ty (?), n. [L. optimitas, fr. optimus the best.] The state of being best. Bailey.

1281

Option

Op″tion (?), n. [L. optio; akin to optare to choose, wish, optimus best, and perh. to E. apt: cf. F. option.]1. The power of choosing; the right of choice or election; an altern...

1282

Optional

Op″tion‐al (?), a. Involving an option; depending on the exercise of an option; left to one's discretion or choice; not compulsory; as, optional studies; it is optional with you...

1283

Optionally

Op″tion‐al‐ly, adv. In an optional manner.

1284

Optocœle

{ Op″to‐cœle (?), ‖Op′to‐cœ″li‐a (?), } n. [NL. optocoelia, fr. Gr. � optic + κοι̑λοσ a hollow.] (Anat.) The cavity of one of the optic lobes of the brain in many animals. B. G....

1285

Optogram

Op″to‐gram (?), n. [Optic + -gram: cf. F. optogramme.] (Physiol.) An image of external objects fixed on the retina by the photochemical action of light on the visual purple. See...

1286

Optography

Op‐tog″ra‐phy (?), n. [Optic + -graphy.] (Physiol.) The production of an optogram on the retina by the photochemical action of light on the visual purple; the fixation of an ima...

1287

Optometer

Op‐tom″e‐ter (?), n. [Optic + -meter.] (Physiol.) An instrument for measuring the distance of distinct vision, mainly for the selection of eveglasses.

1288

Optometrist

Op‐tom″e‐trist (?), n. One who is skilled in or practices optometry.

1289

Optometry

Op‐tom″e‐try (?), n. 1. (Med.) Measurement of the range of vision, esp. by means of the optometer.2. As defined (with minor variations) in the statutes of various States of the ...

1290

Opulence

Op″u‐lence (?), n. [L. opulentia: cf. F. opulence. See Opulent.] Wealth; riches; affluence. Swift

1291

Opulency

Op″u‐len‐cy (?), n. See Opulence. Shak.

1292

Opulent

Op″u‐lent (?), a. [L. opulens, opulentus, fr. ops, opis, power, wealth, riches, perh. akin to E. apt: cf. F. opulent. Cf. Copious, Couple, Office.] Having a large estate or prop...

1293

Opuntia

‖O‐pun″ti‐a (?), n.(Bot.) A genus of cactaceous plants; the prickly pear, or Indian fig.

1294

Opus

‖O″pus (?), n.; pl.Opera (#). [L. See Opera.] A work; specif. (Mus.), a musical composition.☞ Each composition, or set of pieces, as the composer may choose, is called an opus, ...

1295

Opuscle

{ O‐pus″cle (ō̍‐pŭs″'l), O‐pus″cule (?), } n. [L. opusculum, dim. of opus work: cf. F. opuscule.] A small or petty work.

1296

Opusculum

‖O‐pus″cu‐lum (?), n.; pl.Opuscula (#). An opuscule. Smart.