1. signal

noun. (ˈsɪgnəl) Any nonverbal action or gesture that encodes a message.
Synonyms
radiotelegraphic signal symbol alarum high sign dog-ear indicator output signal starting signal input whistling output start warning signal telegraphic signal bugle call curfew animal communication time signal signaling number whistle sign distress call radio beacon recording phone number ticktack storm signal distress signal retreat visual signal alarm telephone number radio beam communication electronic signal input signal drumbeat alert beam all clear
Antonyms
finish end ending death middle
Etymology
signal (English)
segnal (Old French (842-ca. 1400))
signalis (Latin)
signum (Latin)
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2. signal/noise ratio

noun. The ratio of signal intensity to noise intensity.
Synonyms
S/N signal-to-noise signal-to-noise ratio signal/noise ratio

3. signal-to-noise

noun. The ratio of signal intensity to noise intensity.
Synonyms
S/N signal-to-noise ratio signal/noise ratio signal/noise ratio

4. signal/noise

noun. The ratio of signal intensity to noise intensity.
Synonyms
S/N signal-to-noise signal-to-noise ratio signal/noise ratio ratio

5. signal-to-noise ratio

noun. The ratio of signal intensity to noise intensity.
Synonyms
S/N signal-to-noise signal/noise ratio signal/noise ratio

6. signal

verb. (ˈsɪgnəl) Communicate silently and non-verbally by signals or signs.
Synonyms
semaphore whistle sign signalise intercommunicate heliograph signalize flag communicate wigwag
Antonyms
fire negativeness negativity positiveness positivity
Etymology
signal (English)
segnal (Old French (842-ca. 1400))
signalis (Latin)
signum (Latin)

7. signal

verb. (ˈsɪgnəl) Be a signal for or a symptom of.
Synonyms
tell prognosticate foreshadow forecast predict point betoken omen bespeak auspicate mark prefigure foretell presage augur portend bode indicate
Antonyms
majority minority Roman numeral Arabic numeral stay in place
Etymology
signal (English)
segnal (Old French (842-ca. 1400))
signalis (Latin)
signum (Latin)

8. signal

noun. (ˈsɪgnəl) Any incitement to action.
Synonyms
provocation incitation incitement
Antonyms
arrive stop close stand still
Etymology
signal (English)
segnal (Old French (842-ca. 1400))
signalis (Latin)
signum (Latin)

9. signal

adjective. (ˈsɪgnəl) Notably out of the ordinary.
Synonyms
impressive
Antonyms
unimpressive deactivation
Etymology
signal (English)
segnal (Old French (842-ca. 1400))
signalis (Latin)
signum (Latin)

10. signal

noun. (ˈsɪgnəl) An electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes.
Synonyms
electricity interrupt electrical energy
Antonyms
go off disadvantage refrain leave office
Etymology
signal (English)
segnal (Old French (842-ca. 1400))
signalis (Latin)
signum (Latin)
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