ra´di|a´tion|less

ra´di|a´tion|less
ra|di|a|tion «RAY dee AY shuhn», noun.
1. the act or process of giving out light, heat, electricity, or other radiant energy: »

The sun, a lamp, or an electric heater all warm us by radiation.

2. the energy radiated: »

The steam pipes do not afford sufficient radiation for so large a room. The masses of the stars vary only from about a tenth of the solar mass to about 50 times that mass, while the total radiation emitted increases about 500,000 times (W. H. Marshall).

3. a) the action or process of giving forth radioactive rays by molecules and atoms of a radioactive substance, as a result of the disintegration of atomic nuclei: »

In the high-temperature air of the shock wave…ionization and radiation are taking place (Atlantic).

 b) the ray or rays sent out. Some radiations from atoms are alpha particles, beta particles, gamma rays, and neutrons. »

The radiation from an atomic bomb is dangerous to life.

4. divergence from a central point; radial arrangement or structure: »

The beauty of a crest or bird's wing consists…in the radiation of the plumes (John Ruskin).

5. Informal. the radiators of a central heating system referred to collectively, or their capacity: »

The plumbing contractor will figure out how much radiation you need.

–ra´di|a´tion|less, adjective.

Useful english dictionary. 2012.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • mo´tion|less|ness — mo|tion|less «MOH shuhn lihs», adjective. not moving; incapable of motion: »Some sat on horseback, motionless as equestrian statues (Francis Parkman). SYNONYM(S): inert, stationary, still, quiet. –mo´tion|less|ly, adverb. –mo´tion|less|ness, noun …   Useful english dictionary

  • mo´tion|less|ly — mo|tion|less «MOH shuhn lihs», adjective. not moving; incapable of motion: »Some sat on horseback, motionless as equestrian statues (Francis Parkman). SYNONYM(S): inert, stationary, still, quiet. –mo´tion|less|ly, adverb. –mo´tion|less|ness, noun …   Useful english dictionary

  • mo|tion|less — «MOH shuhn lihs», adjective. not moving; incapable of motion: »Some sat on horseback, motionless as equestrian statues (Francis Parkman). SYNONYM(S): inert, stationary, still, quiet. –mo´tion|less|ly, adverb. –mo´tion|less|ness, noun …   Useful english dictionary

  • di|rec´tion|less|ly — di|rec|tion|less «duh REHK shuhn lihs, dy », adjective. having no direction: »He writes with the meandering, seemingly directionless flow of much of life itself (Newsweek). –di|rec´tion|less|ly, adverb …   Useful english dictionary

  • di|rec|tion|less — «duh REHK shuhn lihs, dy », adjective. having no direction: »He writes with the meandering, seemingly directionless flow of much of life itself (Newsweek). –di|rec´tion|less|ly, adverb …   Useful english dictionary

  • e|mo´tion|less|ness — e|mo|tion|less «ih MOH shuhn lihs», adjective. without emotion; devoid of feeling or passion: »a cold, emotionless attitude. –e|mo´tion|less|ness, noun …   Useful english dictionary

  • e|mo|tion|less — «ih MOH shuhn lihs», adjective. without emotion; devoid of feeling or passion: »a cold, emotionless attitude. –e|mo´tion|less|ness, noun …   Useful english dictionary

  • fric´tion|less|ly — fric|tion|less «FRIHK shuhn lihs», adjective. free from friction: »In frictionless space, this electrical propulsion system uses tiny amounts of fuel to move payloads as large as jet liners at much higher speeds (Wall Street Journal).… …   Useful english dictionary

  • fric|tion|less — «FRIHK shuhn lihs», adjective. free from friction: »In frictionless space, this electrical propulsion system uses tiny amounts of fuel to move payloads as large as jet liners at much higher speeds (Wall Street Journal). –fric´tion|less|ly, adverb …   Useful english dictionary

  • am|bi´tion|less — am|bi|tion «am BIHSH uhn», noun, verb. –n. 1. a strong desire for fame, success, honor, wealth, or other position; seeking after a high position or great power: »Because he was filled with ambition, he worked after school and on Saturdays.… …   Useful english dictionary

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