signal
noun
anything that serves to indicate, warn, direct, command, or the like, such as a light, a gesture, an act, etc.: a signal to leave.
signals
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pluralof signal.plural
The grammatical form denoting more than one person, place, thing, or idea.
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present tense formof signal (3rd person singular).present tense
Used to describe things happening now or regularly.
signalnounanything that serves to indicate, warn, direct, command, or the like, such as a light, a gesture, an act, etc.: a signal to leave.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Study co-author Dr. Jiyi Pang said the newly identified molecular signals could eventually help scientists develop more precise tools for monitoring patients and selecting treatments based on the biology of an individual's disease.
From Science Daily ● Sep. 20, 2026
The material is essential for turning electrical signals into laser light.
From MarketWatch ● Sep. 19, 2026
Investors seemingly took issue with dovish signals that sowed doubt how quickly the BOJ will follow through with more rate increases.
From The Wall Street Journal ● Sep. 18, 2026
The company said it includes privacy protections, such as a light that signals when the glasses are recording.
From Los Angeles Times ● Sep. 18, 2026
In the battle between the British and French fleets in Chesapeake Bay, thanks to Washington’s agents, the French may have been reading Admiral Graves’s flag signals.
From "George Washington, Spymaster" by Thomas B. Allen
