Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “signal”


noun [C] (SHOWING)    /ˈsɪɡ.nəl/
something that shows that something else exists or is likely to happen : The poor result is a clear signal of his deteriorating confidence . The changing colour of the leaves on the trees is a signal that it will soon be autumn .Signs, signals and symbolsSpecific signs and symbols
(Definition of signal noun (SHOWING) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of signal

Definitions of “signal” in other dictionaries

Word of the Day


a skilled and trained cook who works in a hotel or restaurant, especially the most important cook

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More