Copy of `Princeton University - WordNet - a lexical database for the English language`

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Princeton University - WordNet - a lexical database for the English language Category: General Date & country: 27/01/2008, USA Words: 85192

Rachmaninoff
Sergei Rachmaninoff noun composer and piano virtuoso born in Russia (1873-1943)

Rachycentridae
family Rachycentridae noun family of pelagic fishes containing solely the cobia

Rachycentron
genus Rachycentron noun genus and family are coextensive and comprise only the cobia

racial
adjective of or related to genetically distinguished groups of people; `racial groups`

racial immunity
noun natural immunity shared by all members of a particular race

racial profiling
noun a form of racism consisting of the (alleged) policy of policemen who stop and search vehicles driven by persons belonging to particular racial groups

racial segregation
noun segregation by race

racially
adverb with respect to race; `racially integrated`

racily
adverb in a racy manner; `racily vernacular language`

Racine
Jean Racine noun French advocate of Jansenism; tragedian who based his works on Greek and Roman themes (1639-1699)

racing
noun the sport of engaging in contests of speed

racing boat
noun a boat propelled by oarsmen and designed for racing

racing circuit
noun a racetrack for automobile races

racing gig
noun a light narrow racing boat for two or more oarsmen

racing shell
noun a very light narrow racing boat

racing skiff
single shell noun a shell for a single oarsman

racing start
noun the start of a race

racism
racialism noun discriminatory or abusive behavior towards members of another race

racist
antiblack adjective discriminatory especially on the basis of race or religion

rack
single-foot noun a rapid gait of a horse in which each foot strikes the ground separately

rack and pinion
noun a wheel gear (the pinion) meshes with a toothed rack; converts rotary to reciprocating motion (and vice versa)

rack of lamb
crown roast noun a roast of the rib section of lamb

rack rent
noun an extortionate rent

racker
noun an attendant who puts pool or billiard balls into a rack

racket
racquet noun a sports implement (usually consisting of a handle and an oval frame with a tightly interlaced network of strings) used to strike a ball (or shuttlecock) in various games

racket club
noun club for players of racket sports

racketeer
noun someone who commits crimes for profit (especially one who obtains money by fraud or extortion)

racketeering
noun engaging in a racket

rackety
rip-roaring adjective uncontrollably noisy

racking
wrenching adjective causing great physical or mental suffering; `a wrenching pain`

racquetball
noun a game played on a handball court with short-handled rackets

racy
adjective designed or suitable for competing in a race

rad
noun a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material

radar
microwave radar noun measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects

radar beacon
racon noun a device that, on receiving radar signals, transmits coded signals in response to help navigators determine their position

radar echo
noun an electronic signal that has been reflected back to the radar antenna; contains information about the location and distance of the reflecting object

radar fire
noun gunfire aimed a target that is being tracked by radar

Radclyffe Hall
Marguerite Radclyffe Hall noun English writer whose novel about a lesbian relationship was banned in Britain for many years (1883-1943)

raddled
worn-out adjective used until no longer useful; `battered trumpets and raddled radios`; `worn-out shoes with flapping soles`

Radhakrishnan
Sarvepalli Radhakrishnan noun Indian philosopher and statesman who introduced Indian philosophy to the West (1888-1975)

radial
stellate adjective arranged like rays or radii; radiating from a common center; `radial symmetry`; `a starlike or stellate arrangement of petals`; `many cities show a radial pattern of main highways`

radial artery
arteria radialis noun branch of the brachial artery beginning below the elbow and extending down the forearm around the wrist and into the palm

radial asymmetry
noun the absence of symmetry about an axis

radial engine
noun an internal-combustion engine having cylinders arranged radially around a central crankcase

radial keratotomy
noun radial pattern of incisions in the cornea that cause the cornea to bulge; performed to correct myopia

radial nerve
nervus radialis noun largest branch of the brachial plexus; extends down the humerus to the lateral epicondyle where it divides into one branch that goes to the skin on the back of the hand and another that goes to the underlying extensor muscles

radial pulse
noun pulse of the radial artery (felt in the wrist)

radial symmetry
noun the property of symmetry about an axis; `the starfish illustrates radial symmetry`

radial vein
vena radialis noun superficial veins ascending the radial side of the forearm; combines with the ulnar veins to form the brachial vein

radial velocity
noun velocity along the line of sight toward or away from the observer

radial-ply
adjective of or relating to automobile tires that have a strip under the tread and relatively little stiffening in the sidewalls; `radial-ply tires`

radially
adverb in a radial manner; `an imaginative dispersal of the pews radially from the central focus of the pulpit`

radially symmetrical
centrosymmetric adjective having a symmetrical arrangement of radiating parts about a central point

radian
noun the unit of plane angle adopted under the Systeme International d`Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)

radiance
radiancy noun the quality of being bright and sending out rays of light

radiant energy
noun energy that is transmitted in the form of (electromagnetic) radiation; energy that exists in the absence of matter

radiant flux
noun the rate of flow of radiant energy (electromagnetic waves)

radiant heating
noun heating a building by radiation from panels containing hot water or electrical heaters

radiantly
adverb in a radiant manner; `the bride smiled radiantly`

radiating(a)
adjective diverging from a common point

radiation
noun the act of spreading outward from a central source

radiation field
noun a field that represents the energy lost from the radiator to space

radiation pattern
radiation diagram noun graphical representation (in polar or Cartesian coordinates) of the spatial distribution of radiation from an antenna as a function of angle

radiation pressure
corpuscular-radiation pressure noun the minute pressure exerted on a surface normal to the direction of propagation of a wave

radiation pyrometer
noun a pyrometer for estimating the temperature of distant sources of heat; radiation is focussed on a thermojunction connected in circuit with a galvanometer

radiation sickness
radiation syndrome noun syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours; `he was suffering from radiation`

radiator
noun any object that radiates energy

radiator cap
noun cap on the opening in the top of a radiator through which a coolant liquid can be added

radiator grille
noun grating that admits cooling air to car`s radiator

radiator hose
noun a flexible hose between the radiator and the engine block

radical
adjective arising from or going to the root; `a radical flaw in the plan`

radical chic
noun an affectation of radical left-wing views and the fashionable dress and lifestyle that goes with them

radical hysterectomy
panhysterectomy noun surgical removal of the uterus and the ovaries and oviducts and cervix and related lymph nodes

radical mastectomy
noun removal of a breast and the underlying muscles (pectoralis major and pectoralis minor) and lymph nodes in the adjacent armpit

radicalism
noun the political orientation of those who favor revolutionary change in government and society

radically
adverb in a radical manner; `she took a radically different approach`

radicchio
noun prized variety of chicory having globose heads of red leaves

radicle
noun (anatomy) a small structure resembling a rootlet (such as a fibril of a nerve)

radiculitis
noun inflammation of the radicle of a nerve

Radiigera
genus Radiigera noun a genus of fungus belonging to the family Geastraceae

Radiigera fuscogleba
noun a fungus similar to an earthstar except that it does not open up; the spore mass is brown at maturity with a column of sterile tissue extending up into it

radio
adjective indicating radiation or radioactivity; `radiochemistry`

radio announcer
noun an announcer whose voice is broadcast on radio

radio antenna
radio aerial noun omnidirectional antenna comprising the part of a radio receiver by means of which radio signals are received

radio astronomy
noun the branch of astronomy that detects and studies the radio waves emitted by celestial bodies

radio beacon
beacon noun a radio station that broadcasts a directional signal for navigational purposes

radio beam
beam noun a signal transmitted along a narrow path; guides pilots in darkness or bad weather

radio brightness
noun the strength of a radio wave picked up by a radio telescope

radio broadcast
noun a broadcast via radio

radio chassis
noun a chassis for a radio receiver

radio compass
noun a direction finder that gives a bearing by determining the direction of incoming radio signals

radio frequency
noun an electromagnetic wave frequency between audio and infrared

radio interferometer
noun radio telescope that uses interference patterns from two antennas instead of a parabolic antenna

radio link
noun a two-way radio communication system (usually microwave); part of a more extensive telecommunication network

radio news
noun a radio broadcast of news

radio noise
noun static at radio wavelengths

radio observation
noun an observation made with a radio telescope

radio operator
noun someone who operates a radio transmitter

radio receiver
receiving set noun an electronic receiver that detects and demodulates and amplifies transmitted signals

radio signal
noun a radio wave used to transmit and receive messages