medium frequency

A radio frequency of between 300 kilohertz and 3 megahertz

superhigh frequency

A radio frequency of between 3000 and 30000 megahertz

medium /mēˈdi-əm/

1. An intermediate or middle position or condition
2. The middle place or degree
3. A middle course
4. A mean (obsolete)
5. (in pl, mediums) medium-dated securities
6. Any intervening means, instrument or agency
7. Instrumentality
8. A substance through which any effect is transmitted
9. That through which communication is maintained
10. A channel (eg newspapers, radio, television) through which information, etc is transmitted to the public (pl media) (also mass medium, pl mass media)
11. Any material, eg magnetic disk, paper tape, on which data is recorded (computing; pl usu media)
12. An enveloping substance or element in which a thing exists or lives
13. Environment
14. The substance, eg oil or water, with which a pigment is mixed to make paint, the vehicle by which it is applied to a surface
15. A nutritive substance on which a culture (of bacteria, tissue, etc) may be fed
16. In spiritualism, the person through whom spirits are said to communicate with the material world (pl mediums)
17. A person of supernormal sensibility (pl mediums)

1. Intermediate or moderate, coming midway between two opposing degrees or extremes
2. Between fast and slow, long and short, etc
3. Mean, average (obsolete)
4. Of a standard size of paper between demy and royal, now 18in by 23in

mediageˈnic adjective

Able to communicate well or present a good image in the media, esp television

mediumisˈtic adjective

Of or relating to spiritualistic mediums

Media Mail noun

A service offering the delivery of printed matter, film, etc by post at special charges

meˈdium-dated adjective

(of securities) redeemable in five to fifteen years' time

medium frequency see under frequent

meˈdium-term adjective

Intermediate between short-term and long-term

meˈdium-wave adjective

medium waves plural noun (radio)

Electromagnetic waves of between 200 and 1000 metres

circulating medium

Money passing from hand to hand, as coin, banknotes, etc