Meaning ofsignalin English

Noun

1. an encoded message in a channel; digital communication
2. a change conveying information over time
3. a sign indicating notice or command
   The driver saw a signal to turn left at the intersection.
4. a device giving visual indication
   The new traffic signal helped reduce accidents at the crossing.
5. an action conveying information; reducing uncertainty
   The manager looked for a signal from the team to proceed with the project.
6. a token or indication of something
   The company's profits are a signal of its strong financial health.
7. useful information (not noise)
   The researcher analyzed the data to extract a clear signal from the background noise.
8. electromagnetic transmission of data or media
   The satellite transmitted a strong signal to the receiving station on Earth.
9. a notification to a process (in computing)
   The operating system sent a signal to the application to terminate.
10. a cell interaction (in biochemistry)
    The protein received a signal from the receptor to initiate the response.