RANDOM HOUSE
`WEBSTER’S
`UNABRIDGED
`DICTIONARY
`
`Second Edition
`
`da
`
`RANDOM HOUSE
`
`NEW YORK
`
`
`
`IPR2018-00294
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`Random House compact unabridged dictionary
`Random House Webster’s Unabridged dictionary.—2nd ed.
`p- cm
`Rev., updated ed. of: Random House compact unabridged dictionary.
`Special 2nd Ed.
`ISBN 0-679-45854-9.—ISBN 0-679-45853-0
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`Typeset and printed in the United States of America.
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`October 1999
`9876543
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`1594
`
` radioteletype
`
`~~
`
`Raffles (raf’alz),-
`
`1. Also
`ra-di-o-tel-e-type
`(ra‘dé 6 tel/i
`tip’), n.
`
`the reciprocal of the curvature at a point on a curve. Cf.
`circle of curvature.
`[1745-55]
`1826, English clea
`called raedieo-
`type-writ-er. (ra/dé 6 tel/i tip’ri’-
`
`ter, -tel/i tip ri
`a teletypewriter equipped for trans-
`raf-fle-sia (vo far
`ra’dius of gyra/‘tion, Physics.
`the distance from an
`
`mitting or receiving messages by radio instead of wire.
`axis at which the mass of a body may be assumed to be
`less, leafless, paren 3
`concentrated and at which the momentofinertia will be
`2.
`the equipment relating to transmission by radi-
`the Malay Peninsula an
`terized by apetalous
`TYPE
`equal to the momentof inertia of the actual mass about
`
`seule: taken as a whole.
`[1935-40; RapIO- + TELE-
`cm-90 cm) in diameter.
`
`
`the axis, equal to the pquare root of the quotient of the
`moment of inertia and the mass.
`[1875-80]
`raedicosthereaepy (ra/dé 6 ther’e pé), n. Med.
`treat-
`
`
`Foeey reduced in number.
`ment of disease by means of x-rays or of radioactive
`FFLES, who obtained the
`radius rod’,
`(in a feathering paddle wheel) any of the
`
`substances. Also called radiation therapy.
`[1900-05;
`
`rods, meeting
`in a hub mounted eccentrically with the
`Ra-fienesque (ri/fe nesk
`
`
`RADIO- + THERAPY] —fa/di-o-ther’aspist, n.
`peddlewhest shaft, for feathering the paddles while in
`
`1783-1840, U.S. naturalist,
`the water. See illus. under paddle wheel.
`[1855-60]
`therapy
`radi-o-theremy (ra/dé 6 thir’mé), n. Med.
`ra-frai-chis-soir (na fre;
`that utilizes the heat from a shoriwave radio apparatus
`
`ra‘dius vec’tor,
`pl.
`radii vec-to-res (vek tér/éz,
`a table of the 18th cent
`or diathermy machine.
`[RADIO- + -THERMY]
`-tér’-), radius vectors. 1. Math. the length of the line
`and shelves for plates. {ts
`raedi-o-thon (ra7dé 6 thon’), n.
`an on-the-air radio
`
`Raf-sanjani
` (ratsin
`segment joining a fixed point or origin to a given point.
`2. Astron. a. the straight line joining two bodies in rela-
`campaign, often lasting 24 hours or more, designed to
`
`tive orbital motion, as the line from the sun to a planet
`cera Hashemi, born ig
`raise money for a radio station, charity, the arts, etc., as
`at any point
`in its orbit. b. the distance between two
`from listeners phoning in and pledging specific dona-
`
`such bodies at any point in the orbit.
`[1745-55]
`tions, sometimes in exchange for gifts or premiums. Cf.
`raft’ (raft, raft), nn. la
`
`form made of buoyant mate
`telethon.
`[1960-65, Amer.; RADIO + -THON]
`raedix (ra/diks), n., pl. rad-leces (rad’a séz/, ra/de-),
`2. a coll
`ble rubber raft.
`ra-dix-es.
`1. Math. a number taken as the base of a
`
`-thor/-), n.
`racdi-o-thorrieum (ra/dé 6 thér’é am,
`ete., fastened together for f]
`Chem.
`a disintegration product of thorium.
`[1920-25,
`system of numbers, logarithms, or the like. 2. Anat.,
`
`raft. 4.a slab of reinforced
`< NL; see RADIO-, THORIUM]
`Bot. a root; radicle.
`[1565-75; < L radix root (cf. RACE’,
`
`on yieldingsoil, usually for
`RADICAL, RAMuS); akin to Gk rhiza root, rhddix branch,
`causing
`raedi-o-toxeic (ra‘dé 0 tok/sik), adj. Pathol.
`weight of the soil that wo
`frond; see Root’)
`radiation sickness.
`[1945-50; RADIO- + TOXIC]
`ment of the building
`exceeds
`rad-lib (rad/lib’), Informal. —n. 1. Usually Disparag-
`raedi-o-trac-er (ra/dé 6 tra/ser), n. Chem. a radioac-
`itself; mat. —v.t. S to t
`
`ing. a liberal, esp. a liberal politician, considered to have
`(logs or the like) into a raft.
`tive isotope used as a tracer.
`[1945-50; RapIo- +
`radical or extremist tendencies. —adj. 2. being or of
`8. (of an ice fee) to
`TRACER]
`such a liberal; liberal tending toward radical: The con-
`debris) from the shore out to
`(ra/dé 6 trans par/ent, -par’-),
`ra-dieo-trans-par-ent
`go or travel on a raft. 10,
`gressman. accused his opponent of holding rad-lib ideas.
`
`n.
`transparent to radiation;
`invisible in x-ray photo-
`}
`Also, rad’/lib’,
`[RAD(ICAL) + LIB(ERAL)]
`other ice floe.
`[1250-1300;
`aphs and under fluoroscopy (opposed to radiopaque).
`
`‘
`RAFTER']
`RAdm, rear admiral. Also, RADM
`Gf radiolucent.
`[RapIo- + TRANSPARENT] —ra/diroe
`trans-par’en-cy, n.
`raft? (raft, raft), n. Informal.
`Radenor (rad/ner), n. 1. a town in SE Pennsylvania,
`
`raft of trouble.
`tiaaeeame v
`near Philadelphia. 27,676. 2. Radnorshire.
`ra/dio tube’, a vacuum tube used in a radio receiving
`
`.
`(ME: abundance)]
`set.
`Rad-nor-shire (rad/ner shér’,
`-sher), n.
`a historic
`raf-ter’ (raffter, raff-), n.
`county in Powys, in E Wales. Also called Radnor.
`racdieoeviesion (ra/dé 3 vizh’an), n. Now Rare.
`televi-
`
`or the like, usually havi
`sion.
`[1960-65; RADIO- + VISION]
`Raedom (ré/dém), n.
`a city in E Poland. 175,000.
`orting
`the sheathing a:
`ra’dio wave’, Elect. an electromagnetic wave having
`rit.
`Dial. to plow (a field) so
`raedome (ra’dém/’), n.
`a dome-shaped device used to
`
`a wavelength between 1 millimeter and 30,000 meters, or
`house a radar antenna.
`(1940-45; b. RaDAR and DOME]
`pushed over onto an unplo’
`a frequency between 10 kilohertz and 300,000 mega-
`ME; OE rafter; c. MLG ra;
`raedon (ra/don), n. Chem. a chemically inert, radioac-
`hertz.
`[1915-20]
`
`raft-er? (raffter,rif?-),n. a
`tive gaseous element produced by the decay of radium:
`the range of wavelengths at
`radio win/dow, Astron.
`emissions produced by outgassing of rock, brick, etc. are
`[
`sport or pastime ofrafting.
`which the earth’s atmosphere is transparent to radio
`a health hazard. Symbol: Rn; at. no.: 86; at. wt: 222.
`waves.
`|
`raft-er? (raffter, raff-), n.
`[1915-20; rap(rum) + -on?]
`
`[Rart? + -ER’]
`radeish (radish), n. 1. the crisp, pungent, edible root
`rad/s, radians per second. Also, rad/sec
`ice in cakes or s
`raft’ ice’,
`of the plant, Raphanus sativus, of the mustard family,
`
`on top of one another. Also
`rad-uela (raj7do le), n., pl. -lae (-18/). a chitinous band
`usually eaten raw. 2. the plantitself.
`[bef. 1000; late
`
`in the mouth of most mollusks, set with numerous, mi-
`MEradish(e), var. (cf. OF radise, var. of
`radice) of ME
`raft-ing (raf’ting, raf?-),
`nute, horny teeth and drawn backward and forward over
`rivers and streams by raft.
`radich(e), OF r#dic < L radic- (s. of radix root’); cf.
`
`OHG ratih, G Rettich] —rad/ishelike’, adj.
`
`the floor of the mouth in the pes of breaking up
`raftseman (rafts‘men,
`food.
`[1745-55; < NL radula,
`L: scraper, equiv. to ra-
`raedieum (ra’dé am), n. 1. Chem. a highly radioactive
`who manages or is emplo:
`d(ere) to scrape, rub + -ula -uLE] —rad/uelar, adj.
`+ ’st + -MAN]
`
`rad-waste (rad/wast’), n.
`See radioactive waste.
`metallic element whose decayyiskls radon gas and alpha
`rays. Symbol: Ra; at. wt.: 226; at. no.: 88. 2. a lustrous
`rag! (rag), n. 1. a worthless
`[by shortening]
`rayon or silk fabric constructed in plain weave and used
`is torn or worn.
`z
`
`Rae (ra), n. 1. a male given name, form of Raymond
`The tramp was dresse
`in women’s Sparel, lining, and drapery.
`[1895-1900, <
`or Ray. 2. a female given name, form of Rachel.
`NL, equiv. toLrad(ius) ray (see RADIUS) + -ium -IUM]
`regarded deprecatingly or
`
`radium A, Chem.
`a substance, formed by decay of
`Rae-burn (ra/bern), n. Sir Henry, 1756-1823, Scottish
`dress: It’s just an old rag I had
`
`painter.
`radon, that gives rise to radium B.
`[1900-05]
`scrap, or fragmentary bit of
`
`radium B, Chem. an isotope of lead, formed by decay
`something of very low value or!
`Rae-tic (ré/tik), n. 1. an extinct language of uncertain
`of radium A, that
`gives rise to radium C, which
`is an
`affinities that was spoken in Rhaetia and written with
`
`distaste:
`Are you still subs
`a newspaper or ne €
`isotope of bismuth, from which radium D, radium E, and
`the Etruscan alphabet. —adj. 2. of or pereeining to
`son of shabby or exhausted
`Raetic. Also, Rhaetian.
`[1930-35; < L Raeticus, Rhae-
`radium F, or polonium 210, are derived.
`[1900-05]
`roofing slate that has one ¢
`ticus. See RHAETIA, -Ic]
`ra/dium emana/tion, Chem.
`(formerly) radon.
`
`the rag. See chew (def. 9
`RAF, Royal Air Force. Also, R.A.F.
`radium F, Chem.
`an isotope of polonium: polonium
`from extreme poverty to
`
`210.
`[1900-05]
`raff (raf), n.
`riffraff; rabble.
`(1665-75; extracted from
`rags to riches in only three
`< Scand; cf. Norw, Sw ragg
`RIFF-RAFF]
`
`ra/dium sul/fate, Chem. a white,
`lid, RaSO,, used
`crastalling: water-
`insoluble, poisonous,
`radioactive so.
`raf-fee (re fé’), n. Naui,
`a triangular sail set in the
`rat
`rag’ (rag), v., ragged,
`
`chiefly in radiotherapy.
`[1970-75]
`to seold. 2. to subject to a
`manner of a square sail above the uppermost yard of a
`
`topsail schooner. Also, raffe (raf), raf-fie’.
`[1885-90;
`ra’dium ther’/apy,
`treatment of disease by means of
`prolonged way (often fol. by r
`
`orig. uncert.]
`radium.
`[1900-05]
`ragging on We oe his
`with
`jokes; play cru:
`raf-fersty (raffor té), adj. Brit., Australian. confused;
`
`(1790-1800;
`an act of ragging.
`
`disorganized.
`[1925-30; orig. in the phrase Rafferty(’s)
`rules no rules at all; perh. identical with Brit. dial. raffa-
`rag® (rag), v.t, ragged,
`
`tory, ref(f)atory, alters. of REFRACTORY]
`of ore) for sorting. [1870-75;
`raf-fiea (raf’é a), x. a fiber obtained from the leaves of
`rag’ (rag), n., v.=
`
`composition in ragtime: a p
`the raffia palm, used for tying pane and other objects
`and for making mats, baskets,
`hats, and the like.
`,
`(music) in ragtime.
`[1895-1900;
`TIME]
`raphia.
`[188085; earlier rofia raffia palm, said to be <
`
`Malagasy]
`raega (rii/go), n. one of the
`
`preseru
`n
`music having a
`raf/fia palm’,
`any
`of various palms of the genus
`[1780-90; <
`Raphia, as R. farinifera of tropical Africa, having
`pin-
`ornamentation.
`1
`le that yield a strong, flexible fiber.
`[1895-
`ragea:mufefin (rag’e muffin
`
`racdieus (ra’dé as), n., pl. -diel (-dé 1’), -dleus-es. 1. a
`table person; tatterde:
`raf-fisnate (raf? nat’), n. Chem.
`the part of a liquid,
`straight line extending from the center of a circle or
`fitting, dirty clothes.
`name of a demon in the poem
`
`sphere to the circumference or surface: The radius of a
`esp. an oil, Soe its more soluble components
`have been extracted by a solvent.
`[1925-30, < F raffi-
`
`circle is half the diameter. 2. the length of suchaline. —Syn. 2. waif, urchin, guu
`
`n(er) to refine (r(e)- RE- + a/ffiner to refine; see AFFINE)
`3. any radial or radiating part. 4. a circular area hav-
`+ -aTE’]
`rag/-and-bone’ man/ (rag’
`ing an extent determined by the length of the radius
`
`who buys and sells used
`from a given or 5
`ified ‘central
`point: every house
`raf-fienose (raf?a nods’), n. Biochem. a colorless, crys-
`[1850-55]
`within a radius of 50 miles. 5. a field or range of opera-
`talline trisaccharide, C,,Hs20i65H,O, with little or no
`rag-bag (rag’bag’), n. 2 @
`sweetness, occurring in the sugar beet, cottonseed, etc.,
`tion or influence. 6. extent ofPoeible operation, travel,
`of cloth are kept for use In
`
`and breaking downto fructose, glucose, and galactose on
`ete., as under a single Supply of
`fuel: the flying radius of
`an airplane. 7. Anat. the bone of the forearm on the
`conglomeration: a ™ bag of fa
`hydrolysis. Also called gessypose, melitose, melitri-
`thumbside. Cf. ulna (def. 1). See diag. under skeleton.
`[16
`tani lies, Also, rag/-bag’.
`
`ose,
`(1875-80; < F raffin(er) to refine (see RAFFINATE)
`8. Zool. a corresponding bone in the forelimb of other
`+ -O8E?]
`vertebrates. 9.
`Mach.
`Now Rare. the throw of an eccen-
`rag’ bolt’. See barb bolt.
`
`raff-ish (rafish), adj. 1. mildly or sometimes engag-
`tric wheel or cam. 10. a rounded corner or edge on a
`rag’ busi/ness. See rag ©
`
`ingly disreputable or nonconformist; rakish: a matinee
`machined or cast piece of metal. 11. Entomol. one of
`rag’ doll’, a stuffed doll,
`idol whose raffish offstage behavior amused millions.
`the principal longitudinal veins in the anterior portion of
`
`2. gaudily vulgar or cheap; tawdry.
`[1795-1805; RarF +
`the wing of an insect.
`[1590-1600; < L: staff, rod, spoke,
`ri
`rage (raj), n., v. raged,
`-1sH!] —raff/ishely, adv. —raff/ish-ness, n.
`
`beam,orig., Ray']
`violent anger. 2.afit of
`lence of wind, waves, fire,
`raf-fle'
`(raf’ol), n., v., -fled, -fling. —n. 1. a form of
`
`radius of conver’gence, Math. a
`positive number
`feeling, desire, or appetite:
`lottery in which a number of
`persons buy one or more
`g0 related to a given power series that the powerseries
`lent desire or
`passion.
`y
`chances to win a prize. —v.t.
`2. to dispose of by a raffle
`converges for every number whose absolute valueis less
`etic rage. 7. the ob; jectof
`
`
`
`than this particular number.
`(often fol. by off): to raffle Offuxitch. —uv.i.
`3, to take
`ashio!
`being popular or
`art in a raffle.
`[1350-1400;
`| rafle dice
`game < MF,
`radius of cur/vature, Math.
`the absolute value of
`
`eriv. of rafler to snatch; cf. rarF] —raf/fler, n.
`:
`rage on campus. 8.
`widely popular or in style.
`raf-fle* (rafol), n. 1. rubbish. 2. Naut. a tangle, as of
`
`CONCISE ETYMOLOGY KEY: <, descended or borrowed from; >,
`with fury; show or feel vio.
`ropes, canvas, etc.
`[1790-1800; rarr + -LE]
`move, rush, dash, or surge
`whence; b., blend of, blended; c., cognate with; cf., compare; deriv.,
`
`
`radius (def. 1)
`C, center
`
`
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