radiator hose

a flexible hose between the radiator and the engine block ;

radical

(linguistics) the form of a word after all affixes are removed; "thematic vowels are part of the stem" ; a sign placed in front of an expression to denote that a root is to be extracted ; a character conveying the lexical meaning of a logogram ; a person who has radical ideas or opinions ; (chemistry) two or more atoms bound together as a single unit and forming part of a molecule ; an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule than has lost an electron and will stabilize itself by stealing an electron from a nearby molecule; "in the body free radicals are high-energy particles that ricochet wildly and damage cells" ;

radical cell

a cell of terrorists (usually 3 to 5 members); "to insure operational security the members of adjacent terrorist cells usually don't know each other or the identity of their leadership" ;

radical chic

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

radical hysterectomy

surgical removal of the uterus and the ovaries and oviducts and cervix and related lymph nodes ;

radical mastectomy

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

radical sign

a sign placed in front of an expression to denote that a root is to be extracted ;

radicalism

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

radicchio

prized variety of chicory having globose heads of red leaves ;

radicle

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

radiculitis

inflammation of the radicle of a nerve ;

radiigera

a genus of fungus belonging to the family Geastraceae ;

radiigera fuscogleba

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

a communication system based on broadcasting electromagnetic waves ; an electronic receiver that detects and demodulates and amplifies transmitted signals ; medium for communication ;

radio-controlled aircraft

an aircraft without a pilot that is operated by remote control ;

radio-frequency spectrum

the entire spectrum of electromagnetic frequencies used for communications; includes frequencies used for radio and radar and television ;

radio-gramophone

electronic equipment consisting of a combination of a radio receiver and a record player ;

radio-opacity

opacity to X-rays or other radiation ;

radio-phonograph

electronic equipment consisting of a combination of a radio receiver and a record player ;

radio aerial

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

radio announcer

an announcer whose voice is broadcast on radio ;

radio antenna

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

radio astronomy

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

radio beacon

a radio station that broadcasts a directional signal for navigational purposes ; a characteristic signal emitted by a transmitter used for navigation ;

radio beam

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

radio brightness

the strength of a radio wave picked up by a radio telescope ;

radio broadcast

a broadcast via radio ;

radio chassis

a chassis for a radio receiver ;

radio compass

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

radio detection and ranging

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

radio emission

an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m ;

radio frequency

an electromagnetic wave frequency between audio and infrared ;

radio interferometer

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

radio link

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

radio news

a radio broadcast of news ;

radio noise

static at radio wavelengths ;

radio observation

an observation made with a radio telescope ;

radio operator

someone who operates a radio transmitter ;

radio radiation

an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m ;

radio receiver

an electronic receiver that detects and demodulates and amplifies transmitted signals ;