different between signalling vs ack

English

Alternative forms

• signaling (US)

Verb

signalling

1. present participle of signal

Noun

signalling (countable and uncountable, plural signallings) (British spelling)

1. the use of signals in communications, especially the sending of signals in telecommunications
2. (rail transport) the signals and associated equipment required for their operation.

Derived terms

• cab signalling

English

Pronunciation

• IPA^(key): /æk/

Etymology 1

Clipping of acknowledged.

Noun

ack (plural acks)

1. (military, now historical) The letter A as used in signalling and other types of communications.
   • 1929, Frederic Manning, The Middle Parts of Fortune, Vintage 2014, p. 173:

     They had to begin at the beginning: learning the Morse code, flag-wagging, a succession of acks, and practice on the buzzer.

2. (data communications) acknowledgment signal

Alternative forms

• (data communications): ACK

Antonyms

• (data communications): nack, nak

Derived terms

• ack emma
• ack-ack

Interjection

ack

1. (radio communications) acknowledged

Etymology 2

Imitative.

Interjection

ack

1. Expressing distaste, alarm, or trepidation.

Anagrams

• AKC, cak

Swedish

Pronunciation

Etymology 1

From Old Swedish akh, from Middle Low German ach (“an unhappy interjection”).

Interjection

ack

1. alas, oh (exclamation of sorrow, etc.)

See also

• eja

Etymology 2

Clipping of ackumulator.

Noun

ack c

1. (electronics, slang) an electric accumulator.

Declension

Synonyms

• ackumulator