signal
Forms
- Plural
- signals
- present (v1)
- signal
- 3rd person singular
- signals
Definitions
1.A sequence of states representing an encoded message in a communication channel.
2.Any variation of a quantity or change in an entity over time that conveys information upon detection.
3.A sign made to give notice of some occurrence, command, or danger, or to indicate the start of a concerted action.
- All obeyed / The wonted signal and superior voice / Of this great potentate.
- Banner-Repeater signals tend to be provided in locations where drivers receive insufficient warning of the main signal, thereby effectively increasing the sighting distance for the main signal.
4.An on-off light, semaphore, or other device used to give an indication to another person.
1.Standing above others in rank, importance, or achievement.
1.To indicate; to convey or communicate by a signal.
- I signalled my acquiescence with a nod.
- He whistled to signal that we should stop.
- My arms wheeled frantically in the air as I tried to signal for help.
2.To communicate with (a person or system) by a signal.
- Seeing the flames, he ran to the control room and signalled headquarters.
Frequency
Overall
Uncommon· #2125
By learning goal
- Everyday conversation
- Rare
- General reading & writing
- Uncommon
- Academic
- Rare
- Literature
- Rare
Related words
Word family
Etymology
From Old French segnal, seignal or Medieval Latin signāle; noun use of the neuter of Late Latin signālis, from Latin signum; verb use from 1805, as a shortened from signalize (1650s).
Doublet of signum and sign.