Webster's Dictionary 1913

1648

Orthis

‖Or″this (ôr″thĭs), n. [NL., fr. Gr. ορθὄσ straight.] (Zoöl.) An extinct genus of Brachiopoda, abundant in the Paleozoic rocks.

1649

Orthite

Or″thite (?), n. [Gr. ορθὄσ straight.] (Min.) A variety of allanite occurring in slender prismatic crystals.

1650

Ortho-

Or″tho– (ôr″thō̍–) pref. [Gr. ορθὄσ straight; akin to Skr. ūrdhva upright, vṛdh to grow, to cause to grow.]1. A combining form signifying straight, right, upright, correct, regu...

1651

Orthocarbonic

Or′tho‐car‐bon″ic (?), a. [Ortho- + carbonic.] (Chem.) Designating a complex ether, C.(OC2H5)4, which is obtained as a liquid of a pleasant ethereal odor by means of chlorpicrin...

1652

Orthocenter

Or′tho‐cen″ter (?), n. [Ortho- + center.] (Geom.) That point in which the three perpendiculars let fall from the angles of a triangle upon the opposite sides, or the sides produ...

1653

Orthoceras

‖Or‐thoc″e‐ras (?), n. [NL., fr. Gr. ορθὄσ straight + κέρασ a horn.] (Paleon.) An extinct genus of Paleozoic Cephalopoda, having a long, straight, conical shell. The interior is...

1654

Orthoceratite

Or′tho‐cer″a‐tite (?), n. [Ortho- + Gr. �, �, a horn.] (Zoöl.) An orthoceras; also, any fossil shell allied to Orthoceras.

1655

Orthoclase

Or″tho‐clase (?), n. [Ortho- + Gr. � to break.] (Min.) Common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other. S...

1656

Orthoclastic

Or′tho‐clas″tic (?), a.(Crystallog.) Breaking in directions at right angles to each other; — said of the monoclinic feldspars.

1657

Orthodiagonal

Or′tho‐di‐ag″o‐nal (?), n. [Ortho- + diagonal.] (Crystallog.) The diagonal or lateral axis in a monoclinic crystal which is at right angles with the vertical axis.

1658

Orthodome

Or″tho‐dome (?), n. [Ortho- + dome.] (Crystallog.) See the Note under Dome, 4.

1659

Orthodox

Or″tho‐dox (?), a. [L. orthodoxus, Gr. ορθὄδοξοσ; ορθὄσ right, true + δόξα opinion, δοκει̑ν to think, seem; cf. F. orthodoxe. See Ortho-, Dogma.] 1. Sound in opinion or doctrine...

1660

Orthodoxal

Or″tho‐dox′al (ôr″thō̍‐dŏks′al), a. Pertaining to, or evincing, orthodoxy; orthodox. Milton.

1661

Orthodoxality

Or′tho‐dox‐al″i‐ty (–ăl″ĭty̆), n. Orthodoxness.

1662

Orthodoxally

Or″tho‐dox′al‐ly (?), adv. Orthodoxly. Milton

1663

Orthodoxastical

Or′tho‐dox‐as″tic‐al (?), a. Orthodox.

1664

Orthodoxical

Or′tho‐dox″ic‐al (?), a. Pertaining to, or evincing, orthodoxy; orthodox.

1665

Orthodoxly

Or″tho‐dox′ly (?), adv. In an orthodox manner; with soundness of faith. Sir W. Hamilton.

1666

Orthodoxness

Or″tho‐dox′ness, n. The quality or state of being orthodox; orthodoxy. Waterland.

1667

Orthodoxy

Or″tho‐dox′y (?), n. [Gr. �: cf. F. orthodoxie. See Orthodox.] 1. Soundness of faith; a belief in the doctrines taught in the Scriptures, or in some established standard of fait...

1668

Orthodromic

Or′tho‐drom″ic (?), a. [Ortho- + Gr. � to run.] Of or pertaining to orthodromy.

1669

Orthodromics

Or′tho‐drom″ics (?), n. The art of sailing in a direct course, or on the arc of a great circle, which is the shortest distance between any two points on the surface of the globe...

1670

Orthodromy

Or″tho‐drom′y (?), n. [Cf. F. orthodromie.] The act or art of sailing on a great circle.

1671

Orthoëpic

{ Or′tho‐ëp″ic (?), Or′tho‐ëp″ic‐al (?), } a. Of or pertaining to orthoëpy, or correct pronunciation. — Or′tho‐ëp″ic‐al‐ly, adv.

1672

Orthoëpist

Or″tho‐ë‐pist (ôr″thō̍‐ē̍‐pĭst), n. One who is skilled in orthoëpy.

1673

Orthoëpy

Or″tho‐ë‐py (–py̆; 277), n. [Gr. ορθοἔπεια; ορθὄσ right + ἔποσ a word: cf. F. orthoépie. See Ortho-, and Epic.] The art of uttering words correctly; a correct pronunciation of w...

1674

Orthogamy

Or‐thog″a‐my (?), n. [Ortho- + Gr. � marriage.] (Bot.) Direct fertilization in plants, as when the pollen fertilizing the ovules comes from the stamens of the same blossom; — op...