Webster's Dictionary, 1913

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Rack-rent (-rĕnt`) noun A rent of the full annual value of the tenement, or near it; an excessive or unreasonably high rent. Blackstone.

Rack-rent transitive verb To subject to rack-rent, as a farm or tenant.

Rack-renter (-ẽr) noun
1. One who is subjected to paying rack- rent.

2. One who exacts rack-rent.

Racket-tailed (-tāld`) adjective (Zoology) Having long and spatulate, or racket-shaped, tail feathers.

Rackety (-ȳ) adjective Making a tumultuous noise.

Racking noun (Nautical) Spun yarn used in racking ropes.

Racktail (răk"tāl`) noun (Horol.) An arm attached to a swinging notched arc or rack, to let off the striking mechanism of a repeating clock.

Rackwork (-wûrk`) noun Any mechanism having a rack, as a rack and pinion.

Racle (rä"k'l) adjective See Rakel . [ Obsolete] Chaucer.

Racleness noun See Rakelness . [ Obsolete] Chaucer.

Raconteur (rȧ`kôN`tẽr") noun [ French] A relater; a storyteller.

Racoonda (rȧ*kōn"dȧ) noun [ From a native name.] (Zoology) The coypu.

Racovian (rȧ*kō"vĭ* a n) noun [ From Racow .] (Eccl. Hist.) One of a sect of Socinians or Unitarians in Poland.

Racquet (răk"kĕt) noun See Racket .

Racy (rā"sȳ) adjective [ Compar. Racier (-sĭ*ẽr); superl. Raciest .] [ From Race a tribe, family.]
1. Having a strong flavor indicating origin; of distinct characteristic taste; tasting of the soil; hence, fresh; rich.

The racy wine,
Late from the mellowing cask restored to light.

2. Hence: Exciting to the mental taste by a strong or distinctive character of thought or language; peculiar and piquant; fresh and lively.

Our raciest , most idiomatic popular words.
M. Arnold.

Burns's English, though not so racy as his Scotch, is generally correct.
H. Coleridge.

The rich and racy humor of a natural converser fresh from the plow.
Prof. Wilson.

Syn. -- Spicy; spirited; lively; smart; piquant. -- Racy , Spicy . Racy refers primarily to that peculiar flavor which certain wines are supposed to derive from the soil in which the grapes were grown; and hence we call a style or production racy when it "smacks of the soil," or has an uncommon degree of natural freshness and distinctiveness of thought and language. Spicy , when applied to style, has reference to a spirit and pungency added by art, seasoning the matter like a condiment. It does not, like racy , suggest native peculiarity. A spicy article in a magazine; a spicy retort. Racy in conversation; a racy remark.

Rich, racy verses, in which we
The soil from which they come, taste, smell, and see.

Rad (răd), obsolete imperfect & past participle of Read , Rede . Spenser.

Radde (răd"d e ), obsolete imperfect of Read , Rede . Chaucer.

Raddle (răd"d'l) noun [ Confer German räder , rädel , sieve, or perhaps English reed .]
1. A long, flexible stick, rod, or branch, which is interwoven with others, between upright posts or stakes, in making a kind of hedge or fence.

2. A hedge or fence made with raddles; -- called also raddle hedge . Todd.

3. An instrument consisting of a wooden bar, with a row of upright pegs set in it, used by domestic weavers to keep the warp of a proper width, and prevent tangling when it is wound upon the beam of the loom.

Raddle transitive verb To interweave or twist together.

Raddling or working it up like basket work.
De Foe.

Raddle noun [ Confer Ruddle .] A red pigment used in marking sheep, and in some mechanical processes; ruddle. "A raddle of rouge." Thackeray.

Raddle transitive verb To mark or paint with, or as with, raddle. "Whitened and raddled old women." Thackeray.

Raddock (-dŭk) noun (Zoology) The ruddock. [ Prov. Eng.]

Rade (rād) noun A raid. [ Scot.]

Radeau (rȧ`dō") noun [ French] A float; a raft.

Three vessels under sail, and one at anchor, above Split Rock, and behind it the radeau Thunderer.
W. Irving.

Radial (rā"dĭ* a l) adjective [ Confer French radial . See Radius .] Of or pertaining to a radius or ray; consisting of, or like, radii or rays; radiated; as, (Botany) radial projections; (Zoology) radial vessels or canals; (Anat.) the radial artery.

Radial symmetry . (Biol.) See under Symmetry .

Radial engine (Machinery) An engine, usually an internal-combustion engine of a certain type (the radial type ) having several cylinders arranged radially like the spokes of a complete wheel. The semiradial engine has radiating cylinders on only one side of the crank shaft.

Radiale (rā`dĭ*ā"le) noun ; plural Radialia (- lĭ*ȧ) [ New Latin See Radial .]
1. (Anat.) The bone or cartilage of the carpus which articulates with the radius and corresponds to the scaphoid bone in man.

2. plural (Zoology) Radial plates in the calyx of a crinoid.

Radially (rā"dĭ* a l*lȳ) adverb In a radial manner.

Radian (- a n) noun [ From Radius .] (Math.) An arc of a circle which is equal to the radius, or the angle measured by such an arc.

Radiance (- a ns), Ra"di*an*cy (- a n*sȳ) noun The quality of being radiant; brilliancy; effulgence; vivid brightness; as, the radiance of the sun.

Girt with omnipotence, with radiance crowned.

What radiancy of glory,
What light beyond compare !

Syn. -- Luster; brilliancy; splendor; glare; glitter.

Radiant (- a nt) adjective [ Latin radians , -antis , present participle of radiare to emit rays or beams, from radius ray: confer French radiant . See Radius , Ray a divergent line.]
1. Emitting or proceeding as from a center; resembling rays; radiating; radiate.

2. Especially, emitting or darting rays of light or heat; issuing in beams or rays; beaming with brightness; emitting a vivid light or splendor; as, the radiant sun.

Mark what radiant state she spreads.

3. Beaming with vivacity and happiness; as, a radiant face.

4. (Her.) Giving off rays; -- said of a bearing; as, the sun radiant ; a crown radiant .

5. (Botany) Having a raylike appearance, as the large marginal flowers of certain umbelliferous plants; -- said also of the cluster which has such marginal flowers.

Radiant energy (Physics) , energy given out or transmitted by radiation, as in the case of light and radiant heat. -- Radiant heat , heat proceeding in right lines, or directly from the heated body, after the manner of light, in distinction from heat conducted or carried by intervening media. -- Radiant point . (Astron.) See Radiant , noun , 3.

Radiant noun
1. (Opt.) The luminous point or object from which light emanates; also, a body radiating light brightly.

2. (Geom.) A straight line proceeding from a given point, or fixed pole, about which it is conceived to revolve.

3. (Astron.) The point in the heavens at which the apparent paths of shooting stars meet, when traced backward, or whence they appear to radiate.

Radiant adjective (Physics) Emitted or transmitted by radiation; as, a radiant energy; radiant heat.

Radiant engine (Machinery) A semiradial engine. See Radial engine , above.

Radiantly (rā"dĭ* a nt*lȳ) adverb In a radiant manner; with glittering splendor.

Radiary (-a*rȳ) noun [ Confer French radiaire .] (Zoology) A radiate. [ Obsolete]

Radiata (-ā"tȧ) noun plural [ New Latin , from radiatus , past participle See Radiate .] (Zoology) An extensive artificial group of invertebrates, having all the parts arranged radially around the vertical axis of the body, and the various organs repeated symmetrically in each ray or spheromere.

» It includes the cœlenterates and the echinoderms. Formerly, the group was supposed to be a natural one, and was considered one of the grand divisions of the animal kingdom.

Radiate (rā"dĭ*āt) intransitive verb [ imperfect & past participle Radiated (- ā`tĕd); present participle & verbal noun Radiating .] [ Latin radiatus , past participle of radiare to furnish with spokes or rays, to radiate, from radius ray. See Radius , Ray a divergent line.]
1. To emit rays; to be radiant; to shine.

Virtues shine more clear
In them [ kings], and radiate like the sun at noon.

2. To proceed in direct lines from a point or surface; to issue in rays, as light or heat.

Light radiates from luminous bodies directly to our eyes.

Radiate transitive verb
1. To emit or send out in direct lines from a point or points; as, to radiate heat.

2. To enlighten; to illuminate; to shed light or brightness on; to irradiate. [ R.]

Radiate (-at) adjective [ Latin radiatus , past participle ]
1. Having rays or parts diverging from a center; radiated; as, a radiate crystal.

2. (Botany) Having in a capitulum large ray florets which are unlike the disk florets, as in the aster, daisy, etc.

3. (Zoology) Belonging to the Radiata.

Radiate noun (Zoology) One of the Radiata.

Radiate-veined (-vānd`) adjective (Botany) Having the principal veins radiating, or diverging, from the apex of the petiole; -- said of such leaves as those of the grapevine, most maples, and the castor-oil plant.

Radiated (-ā`tĕd) adjective
1. Emitted, or sent forth, in rays or direct lines; as, radiated heat.

2. Formed of, or arranged like, rays or radii; having parts or markings diverging, like radii, from a common center or axis; as, a radiated structure; a radiated group of crystals.

3. (Zoology) Belonging to the Radiata.

Radiately (-at*lȳ) adverb In a radiate manner; with radiation or divergence from a center.

Radiatiform (-ăt"ĭ*fôrm) adjective (Botany) Having the marginal florets enlarged and radiating but not ligulate, as in the capitula or heads of the cornflower. Gray.

Radiation (-ā"shŭn) noun [ Latin radiatio : confer French radiation .]
1. The act of radiating, or the state of being radiated; emission and diffusion of rays of light; beamy brightness.

2. The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat.

Radiative (rā"dĭ*a*tĭv) adjective Capable of radiating; acting by radiation. Tyndall.

Radiator (-ā`tẽr) noun That which radiates or emits rays, whether of light or heat; especially, that part of a heating apparatus from which the heat is radiated or diffused; as, a steam radiator .

Radiator noun
1. Any of various devices for cooling an internal substance by radiation, as a system og rings on a gun barrel for cooling it, or a nest of tubes with large radiating surface for cooling circulating water, as in an automobile.

2. (Wireless Teleg.) An oscillator.