| actor |
a person who acts a part in a play, a movie, or a radio or television program. |
| actress |
a woman or girl who plays a part in movies, television, plays, or radio. |
| aerial |
a radio or television antenna. [1/3 definitions] |
| announcer |
a person who presents programs or reads advertisements on radio or television. |
| antenna |
a metal device that sends or receives radio or television signals. [1/2 definitions] |
| audience |
the people reached by television, radio, newspapers, or magazines. [1/3 definitions] |
| beacon |
a signal of light or radio waves that guides or warns ships or aircraft. |
| broadcast |
to send over television or radio. [3/4 definitions] |
| cell phone |
a telephone that operates using radio signals and therefore requires no wires. A cell phone can be taken with one anywhere but may not function if it is too far away from a radio transmitter to receive signals. |
| cellular phone |
a telephone that can be taken anywhere and does not use wires. A cellular phone uses radio signals that are sent out from many different points called "cells." A cellular phone gets its signals from whatever cell is closest to it at the moment. A cellular phone is often called a "cell phone." |
| channel |
a frequency band used by radio or television stations. [1/4 definitions] |
| commentator |
a person who comments on something. Commentators often appear on radio or television shows to give opinions or explanations of news and events. |
| commercial |
an advertisement on television or radio. [1/3 definitions] |
| communication |
(plural) means of sending messages, such as telephone, radio, and television. [1/3 definitions] |
| console2 |
a cabinet for a television set, CD player, or radio. |
| dial |
a disk or knob on a television or radio for tuning to different channels. [2/6 definitions] |
| disc jockey |
a person whose job is to play recorded music on the radio or for an event such as a dance. |
| DJ |
a person who plays recorded music and makes announcements or comments on the radio or at an event. |
| earphone |
a small speaker that fits on or in the ear for listening to sound from a radio, tape player, telephone, or other electronic machine. |
| frequency |
the number of energy waves that pass a certain point in a certain time period. Frequency is used to measure radio waves and other kinds of radiation. [1/3 definitions] |
| ham2 |
an amateur radio operator. [1/2 definitions] |