Webster's Dictionary 1913

190

Radiopticon

Ra′di‐op″ti‐con (?), n. [Radio- + stereopticon.] See Projector, above.

191

Radioscopy

Ra′di‐os″co‐py (?), n. [Radio- + -scopy.] Direct observation of objects opaque to light by means of some other form of radiant energy, as the Röntgen rays. — Ra′di‐o‐scop″ic (#)...

192

Radiotelegram

Ra′di‐o‐tel″e‐gram (?), n. A message transmitted by radiotelegraph.

193

Radiotelegraph

Ra′di‐o‐tel″e‐graph (?), n. [Radio- + telegraph.] A wireless telegraph.

194

Radiotelegraphic

Ra′di‐o‐tel′e‐graph″ic (?), a. Of or pertaining to radiotelegraphy; employing, or used or employed in, radiotelegraphy.

195

Radiotelegraphy

Ra′di‐o‐te‐leg″ra‐phy (?), n. [Radio- + telegraphy.] Telegraphy using the radiant energy of electrical (Hertzian) waves; wireless telegraphy; — the term adopted for use by the R...

196

Radiotelephone

Ra′di‐o‐tel″e‐phone (?), n. A wireless telephone. — Ra′di‐o‐te‐leph″o‐ny (#), n.

197

Radiotherapy

Ra′di‐o‐ther″a‐py (?), n. [Radio- + therapy.] (Med.) Treatment of disease by means of Röntgen rays or other forms of radioactivity.

198

Radiothorium

Ra′di‐o‐tho″ri‐um (?), n.(Chem.) A radioactive substance apparently formed as a product from thorium.

199

Radious

Ra″di‐ous (rā″dĭ‐ŭs), a. [L. radiosus.] 1. Consisting of rays, as light. Berkeley.2. Radiating; radiant. G. Fletcher.

200

Radish

Rad″ish (răd″ĭsh), n. [F. radis; cf. It. radice, Pr. raditz; all fr. L. radix, -icis, a root, an edible root, especially a radish, akin to E. wort. See Wort, and cf. Eradicate, ...

201

Radium

Ra′di‐um (?), n. [NL., fr. L. radius ray.] (Chem.) An intensely radioactive metallic element found (combined) in minute quantities in pitchblende, and various other uranium mine...

202

Radius

Ra″di‐us (rā″dĭ‐ŭs), n.; pl. L. Radii (–ī); E. Radiuses (–ŭs‐ĕz). [L., a staff, rod, spoke of a wheel, radius, ray. See Ray a divergent line.] 1. (Geom.) A right line drawn or e...

203

Radius vector

‖Ra″di‐us vec″tor (vĕk″tŏr). 1. (Math.) A straight line (or the length of such line) connecting any point, as of a curve, with a fixed point, or pole, round which the straight l...

204

Radix

Ra″dix (rā″dĭks), n.; pl. L. Radices (răd″ĭ‐sēz), E. Radixes (rā″dĭks‐ĕz). [L. radix, -icis, root. See Radish.] 1. (Philol.) A primitive word, from which spring other words; a r...

205

Radula

‖Rad″u‐la (răd″ū̍‐lȧ), n.; pl.Radulæ (–lē). [L., a scraper, fr. radere to scrape.] (Zoöl.) The chitinous ribbon bearing the teeth of mollusks; — called also lingual ribbon, and ...

206

Raduliform

Ra‐du″li‐form (rȧ‐dū″lĭ‐fôrm), a. [L. radula a scraper + -form.] Rasplike; as, raduliform teeth.

207

Raff

Raff (rȧf), v. t. [imp. & p. p.Raffed (rȧft); p. pr. & vb. n.Raffing.] [OF. raffer, of German origin; cf. G. raffen; akin to E. rap to snatch. See Rap, and cf. Riffraff, Rip to ...

208

Raff (2)

Raff, n. 1. A promiscuous heap; a jumble; a large quantity; lumber; refuse. “A raff of errors.” Barrow.2. The sweepings of society; the rabble; the mob; — chiefly used in the co...

209

Raffaelesque

Raf′fa‐el‐esque″ (răf′fȧ‐ĕl‐ĕsk″), a. Raphaelesque.

210

Raffia

Raf″fi‐a (răf″fĭ‐ȧ), n.(Bot.) A fibrous material used for tying plants, said to come from the leaves of a palm tree of the genus Raphia. J. Smith (Dict. Econ. Plants).

211

Raffia palm

Raf″fi‐a palm (?). (a) A pinnate-leaved palm (Raphia ruffia) native of Madagascar, and of considerable economic importance on account of the strong fiber (raffia) obtained from ...

212

Raffinose

Raf″fi‐nose′ (răf″fĭ‐nōs′), n. [F. raffiner to refine.] (Chem.) A colorless crystalline slightly sweet substance obtained from the molasses of the sugar beet.

213

Raffish

Raff″ish (rȧf″ĭsh), a. Resembling, or having the character of, raff, or a raff; worthless; low.A sad, raffish, disreputable character. Thackeray.

214

Raffle

Raf″fle (răf″f'l), n. [F. rafle; faire rafle to sweep stakes, fr. rafler to carry or sweep away, rafler tout to sweep stakes; of German origin; cf. G. raffeln to snatch up, to r...

215

Raffle (2)

Raf″fle, v. i. [imp. & p. p.Raffled (–f'ld); p. pr. & vb. n.Raffling (–flĭng).] To engage in a raffle; as, to raffle for a watch.

216

Raffle (3)

Raf″fle, v. t. To dispose of by means of a raffle; — often followed by off; as, to raffle off a horse.