signal
A sequence of states representing an encoded message in a communication channel.
Other meanings
Any variation of a quantity or change in an entity over time that conveys information upon detection.
A sign made to give notice of some occurrence, command, or danger, or to indicate the start of a concerted action.
Example sentences
Word history
From Latin "signum".
Where this comes from
This definition is adapted from “signal” on Wiktionary, by its contributors; example sentences are from Tatoeba, credited to their authors above, published under CC BY-SA 4.0. This page is published under the same licence.