call sign


Definition of call sign 

: the combination of identifying letters, letters and numbers, or words assigned to an operator, office, activity, vehicle, or station for use in communication (as in the address of a message sent by radio)

Examples of call sign in a Sentence

Recent Examples on the Web

Aircraft on Charlie lining up runway 16C, say your call sign. Matt Day, The Seattle Times, "“We were all screaming, ‘Oh my god’” : How the Horizon Air theft and crash unfolded," 12 Aug. 2018 By July or August, Reber called Marsala at work with the news the station was approved and in November, the WLTL call sign was given a green light. Jesse Wright,, "Former DJs, managers help celebrate 50 years of high school radio station WLTL," 22 Apr. 2018 Both men carried out two earlier spacewalks together in March and May. For identification, Arnold, call sign EV-1, is wearing a suit with red stripes and is using helmet camera No. William Harwood, CBS News, "Space station astronauts take spacewalk to install cameras," 14 June 2018 She was not asked to elaborate one why he was given that call sign. Pauline Repard,, "Retrial begins on Navy commader attempted rape case," 29 Mar. 2018 Mattis’s call sign in the Marines is Chaos, and many people assume this is another allusion to battlefield mayhem, like Mad Dog. Robert F. Worth, New York Times, "Can Jim Mattis Hold the Line in Trump’s ‘War Cabinet’?," 26 Mar. 2018 Marsala said the boys initially considered the call sign WLTH. Jesse Wright,, "Former DJs, managers help celebrate 50 years of high school radio station WLTL," 22 Apr. 2018 She was even given an official call sign, a nickname used by mission control when talking to their talent. Alyson Krueger, Teen Vogue, "17-Year-Old Alyssa Carson Wants to Be the First Person on Mars," 21 Mar. 2018 The Astros also met with Darvish; the Yankees and Dodgers remain in the mix, and the Twins have called signing him a priority. David Haugh,, "Torn between Arrieta and Darvish? For Cubs, the difference is Yu.," 21 Dec. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'call sign.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of call sign

1907, in the meaning defined above

Keep scrolling for more

Learn More about call sign

Statistics for call sign

Last Updated

16 Nov 2018

Look-up Popularity

Time Traveler for call sign

The first known use of call sign was in 1907

See more words from the same year

Keep scrolling for more

More Definitions for call sign

call sign


English Language Learners Definition of call sign

: a combination of letters and numbers that is used to identify someone or something in a radio broadcast

More from Merriam-Webster on call sign

Rhyming Dictionary: Words that rhyme with call sign

Comments on call sign

What made you want to look up call sign? Please tell us where you read or heard it (including the quote, if possible).


having a pattern of small flowers

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
True or False

Test your knowledge - and maybe learn something along the way.

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!