| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024ra•di•o /ˈreɪdiˌoʊ/USA pronunciation n., pl. -di•os, adj., v., -di•oed, -di•o•ing. n. - Radio and Television[uncountable] a system of communicating speech or other sounds by sending electromagnetic waves of a particular frequency range over long distances.
- Radio and Television[countable] a device for receiving or sending radio broadcasts.
- Radio and Television[uncountable] the business or industry of sending signals to be heard by an audience.
- on (the) radio:
- having been broadcast through radio waves and received by a radio:She first heard the news on the radio.
- broadcasting by radio to others:on the radio between midnight and 6 in the morning.
adj. [before a noun] - Radio and Televisionrelating to, used in, or sent by radio:radio messages.
v. - Radio and Televisionto send (a message, music, etc.) by radio: [no object]The pilots radioed for help.[~ + object]The pilots radioed the message.[~ + that clause]The pilots radioed that they were under attack.
- Radio and Televisionto send a message to (a person) by radio: [~ + object]The pilots radioed the tower.[~ + object + that clause]The pilots radioed the tower that they needed to land.
radio-, prefix. - radio- comes ultimately from Latin radius, meaning "beam, ray.''
- radio- is attached to roots and nouns and means "radiant energy'':radiometer.
- radio- is also used to mean "radio waves'': radiolocation;
radiotelephone. - radio- is also used to mean "the giving off of rays as a result of the breakup of atomic nuclei'':radioactivity; radiocarbon.
- radio- is also used to mean "x-rays'':radiograph; radiotherapy.
WordReference Random House Unabridged Dictionary of American English © 2024ra•di•o (rā′dē ō′),USA pronunciation n., pl. -di•os, adj., v., -di•oed, -di•o•ing. n. - Radio and Televisionwireless telegraphy or telephony:speeches broadcast by radio.
- Radio and Televisionan apparatus for receiving or transmitting radio broadcasts.
- Radio and Televisiona message transmitted by radio.
adj. - Radio and Televisionpertaining to, used in, or sent by radio.
- Physicspertaining to or employing radiations, as of electrical energy.
v.t. - Radio and Televisionto transmit (a message, music, etc.) by radio.
- Radio and Televisionto send a message to (a person) by radio.
v.i. - Radio and Televisionto transmit a message, music, etc., by radio.
- shortening of radiotelegraph or radiotelegraphy 1910–15
- a combining form with the meanings "dealing with radiant energy'' (radiometer), "employing or dealing with radio waves'' (radioacoustics;
radiolocation;
radiotelephone), "emitting rays as a result of the breakup of atomic nuclei'' (radioactive;
radiocarbon), "characterized by, employing or dealing with such rays'' (radiography;
radiopaque;
radiotherapy).
- French, combining form representing Latin radius beam, ray, radius
Collins Concise English Dictionary © HarperCollins Publishers:: radio /ˈreɪdɪəʊ/ n ( pl -os)- the use of electromagnetic waves, lying in the radio-frequency range, for broadcasting, two-way communications, etc
- Also called (esp Brit): wireless an electronic device designed to receive, demodulate, and amplify radio signals from sound broadcasting stations, etc
- the broadcasting, content, etc, of sound radio programmes: he thinks radio is poor these days
- the occupation or profession concerned with any aspect of the broadcasting of sound radio programmes
- (modifier) relating to, produced for, or transmitted by sound radio
- short for radiotelegraph, radiotelegraphy, radiotelephone
- (modifier) of, relating to, employed in, or sent by radio signals: a radio station
- of, concerned with, using, or operated by radio frequencies: radio spectrum
- (modifier) (of a motor vehicle) equipped with a radio for communication
vb ( -os, -oing, -oed)- to transmit (a message) to (a person, radio station, etc) by means of radio waves
Etymology: 20th Century: short for radiotelegraphy Collins Concise English Dictionary © HarperCollins Publishers:: radio- combining form - denoting radio, broadcasting, or radio frequency: radiogram
- indicating radioactivity or radiation
Etymology: from French, from Latin radius ray; see radius |