Webster's Dictionary 1913

1702

Orthopterous

Or‐thop″ter‐ous (?), a.(Zoöl.) Of or pertaining to the Orthoptera.

1703

Orthorhombic

Or′tho‐rhom″bic (?), a. [Ortho- + rhombic.] (Crystallog.) Noting the system of crystallization which has three unequal axes at right angles to each other; trimetric. See Crystal...

1704

Orthoscope

Or″tho‐scope (?), n. [Ortho- + -scope.] (Physiol.) An instrument designed to show the condition of the superficial portions of the eye.

1705

Orthoscopic

Or′tho‐scop″ic (?), a.(Opt.) Giving an image in correct or normal proportions; giving a flat field of view; as, an orthoscopic eyepiece.

1706

Orthosilicic

Or′tho‐si‐lic″ic (?), a. [Ortho- + silicic.] (Chem.) Designating the form of silicic acid having the normal or highest number of hydroxyl groups.

1707

Orthospermous

Or′tho‐sper″mous (?), a. [Ortho- + Gr. � seed.] (Bot.) Having the seeds straight, as in the fruits of some umbelliferous plants; — opposed to cœlospermous. Darwin.

1708

Orthostade

Or″tho‐stade (?), n. [Gr. �; ορθὄσ straight + � to place.] (Anc. Costume) A chiton, or loose, ungirded tunic, falling in straight folds.

1709

Orthostichy

Or‐thos″ti‐chy (?), n.; pl.Orthostichies (#). [Ortho- + Gr. στίχοσ row.] (Bot.) A longitudinal rank, or row, of leaves along a stem.

1710

Orthotomic

Or′tho‐tom″ic (?), a. [Ortho- + Gr. � to cleave.] (Geom.) Cutting at right angles.Orthotomic circle(Geom.), that circle which cuts three given circles at right angles.

1711

Orthotomous

Or‐thot″o‐mous (?), a.(Crystallog.) Having two cleavages at right angles with one another.

1712

Orthotomy

Or‐thot″o‐my (?), n.(Geom.) The property of cutting at right angles.

1713

Orthotone

Or″tho‐tone (?), a. [Ortho- + Gr. � tone, accent.] (Gr. Gram.) Retaining the accent; not enclitic; — said of certain indefinite pronouns and adverbs when used interrogatively, w...

1714

Orthotropal

{ Or‐thot″ro‐pal (?), Or‐thot″ro‐pous (?), } a. [Ortho- + Gr. � to turn: cf. F. orthotrope.] (Bot.) Having the axis of an ovule or seed straight from the hilum and chalaza to th...

1715

Orthotropic

Or′tho‐trop″ic (?), a. [See Orthotropal.] (Bot.) Having the longer axis vertical; — said of erect stems. Encyc. Brit.

1716

Orthoxylene

Or′tho‐xy″lene (?), n. [Ortho- + xylene.] (Chem.) That variety of xylene in which the two methyl groups are in the ortho position; a colorless, liquid, combustible hydrocarbon r...

1717

Ortive

Or″tive (?), a. [L. ortivus, fr. oriri, ortus, to rise: cf. F. ortive.] Of or relating to the time or act of rising; eastern; as, the ortive amplitude of a planet.

1718

Ortolan

Or″to‐lan (?), n. [F., fr. It. ortolano ortolan, gardener, fr. L. hortulanus gardener, fr. hortulus, dim. of hortus garden. So called because it frequents the hedges of gardens....

1719

Ortygan

Or″ty‐gan (?), n.(Zoöl.) One of several species of East Indian birds of the genera Ortygis and Hemipodius. They resemble quails, but lack the hind toe. See Turnix.

1720

Orval

Or″val (?), n. [F. orvale.] (Bot.) A kind of sage (Salvia Horminum).

1721

Orvet

‖Or′vet″ (?), n.(Zoöl.) The blindworm.

1722

Orvietan

Or′vi‐e″tan (?), n. [F. orviétan: cf. It. orvietano. So called because invented at Orvieto, in Italy.] A kind of antidote for poisons; a counter poison formerly in vogue.

1723

Oryal

{ O″ry‐al (?), O″ry‐all (?) }, n. See Oriel.

1724

Oryctere

Or″yc‐tere (?), n. [Gr. ορυκτἤρ digger: cf. F. oryctère.] (Zoöl.) The aard-vark.

1725

Orycterope

O‐ryc″ter‐ope (?), n. [Gr. ορυκτἤρ digger + πούσ foot.] (Zoöl.) Same as Oryctere.

1726

Oryctognosy

Or′yc‐tog″no‐sy (?), n. [Gr. ορυκτὄσ dug (� to dig) + γνω̑σισ knowledge.] Mineralogy. — Or′yc‐tog‐nos″tic (#), a. — Or′yc‐tog‐nos″tic‐al (#), a. — Or′yc‐tog‐nos″tic‐al‐ly (#), adv.

1727

Oryctography

Or′yc‐tog″ra‐phy (?), n. [Gr. ορυκτὄσ dug + -graphy.] Description of fossils.

1728

Oryctological

Or′yc‐to‐log″ic‐al (?), a. [Cf. F. oryctologique.] Of or pertaining to oryctology.