: a detectable physical quantity or impulse (such as a voltage, current, or magnetic field strength) by which messages or information can be transmitted. Noun He likes her but he is sending the …

SIGNAL definition: 1. an action, movement, or sound that gives information, a message, a warning, or an order: 2. a…. Learn more.

SIGNAL definition: anything that serves to indicate, warn, direct, command, or the like, such as a light, a gesture, an act, etc.: a signal to leave. See examples of signal used in a sentence.

In electronics and telecommunications, signal refers to any time-varying voltage, current, or electromagnetic wave that carries information. In signal processing, signals are analog and …

1. anything that serves to indicate, warn, direct, command, or the like, as a light, a gesture, or an act.

Definition of signal noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Feb 13, 2017 · A signal is a gesture, sound, or action which is intended to give a particular message to the person who sees or hears it. They fired three distress signals. As soon as it …

Apr 15, 2025 · In our everyday lives and technology, signals play an important role in communication and data transfer. A signal is any measurable quantity that changes over time …

A signal is a gesture or message that people use to communicate with each other. The wave you give a good friend to call her over from across the room and the impulse that transmits your …

The change in his behavior is clearly a signal [= indication] that there is a problem. He likes her but he is sending the wrong signals with his constant teasing. Inflammation is a signal of …