| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
radio (ˈreɪdɪəʊ) ![]() | |
| —n , pl -os | |
| 1. | the use of electromagnetic waves, lying in the radio-frequency range, for broadcasting, two-way communications, etc |
| 2. | an electronic device designed to receive, demodulate, and amplify radio signals from sound broadcasting stations, etc |
| 3. | a similar device permitting both transmission and reception of radio signals for two-way communications |
| 4. | the broadcasting, content, etc, of sound radio programmes: he thinks radio is poor these days |
| 5. | a. the occupation or profession concerned with any aspect of the broadcasting of sound radio programmes: he's in radio |
| b. (modifier) relating to, produced for, or transmitted by sound radio: radio drama | |
| 6. | radiotelegraph radiotelegraphy short for radiotelephone |
| 7. | (modifier) |
| a. of, relating to, employed in, or sent by radio signals: a radio station | |
| b. of, concerned with, using, or operated by radio frequencies: radio spectrum | |
| 8. | (modifier) (of a motor vehicle) equipped with a radio for communication: radio car |
| —vb , -os, -os, -oing, -oed | |
| 9. | to transmit (a message) to (a person, radio station, etc) by means of radio waves |
| [C20: short for radiotelegraphy] | |
radio- or radi-
pref.
Radiation; radiant energy: radiometer.
Radioactive: radiochemistry.
Radius: radiobicipital.
| radio (rā'dē-ō) Pronunciation Key
Noun The equipment used to generate, alter, transmit, and receive radio waves so that they carry information. Adjective Relating to or involving the emission of radio waves. |