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• Cid
  Cid

  noun

  The, El Cid CampeadorRodrigo Díaz de Bivar, c1040–99, Spanish soldier: hero of the wars against the Moors.
• c.i.d.
  c.i.d.

  abbreviation

  cubic-inch displacement: the displacement of an engine measured in cubic inches.
• C.I.D.
  C.I.D.

  abbreviation

  Criminal Investigation Department of Scotland Yard.
• CID
  CID

  abbreviation

  (in Britain) Criminal Investigation Department; the detective division of a police force

Cid

¹ American  

[sid, theed] / sɪd, θid /

noun

1. The, El Cid CampeadorRodrigo Díaz de Bivar, c1040–99, Spanish soldier: hero of the wars against the Moors.

2. (italics) Le. Le Cid.

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c.i.d. ² American  

Or cid,

abbreviation

Automotive.

1. cubic-inch displacement: the displacement of an engine measured in cubic inches.

   My old car had a 302 c.i.d. engine.

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C.I.D. ³ American  

abbreviation

1. Criminal Investigation Department of Scotland Yard.

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CID ¹ British  

abbreviation

1. (in Britain) Criminal Investigation Department; the detective division of a police force

2. cruel, inhumane, and degrading: denoting the brutal and demeaning treatment of prisoners

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Cid ² British  

/ sɪd, θið /

noun

1. El or the. original name Rodrigo Diaz de Vivar. ?1043–99, Spanish soldier and hero of the wars against the Moors

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Etymology

Origin of C.I.D.

First recorded in 1900–05

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Example Sentences

See Examples For:

Cid C.I.D. CID

The building, designed by Ruy Jervis d’Athouguia, Pedro Cid and Alberto Pessoa, emphasized the integration of art, architecture and nature.

From The Wall Street Journal ● Aug. 26, 2026

“Traveling offseason is one of the easiest ways seniors can stretch their travel budget,” advises Melissa Cid, a consumer savings expert at MySavings.com.

From MarketWatch ● Feb. 18, 2026

He is married to Lissette del Cid, with whom he has three daughters and three grandchildren.

From Barron's ● Dec. 24, 2025

And it singled out the Jail Café on Sunset Blvd. in Hollywood, where the El Cid restaurant now stands.

From Los Angeles Times ● Aug. 8, 2025

Though she hadn’t said it, the name Cid rang in my ears.

From "The Many Assassinations of Samir, the Seller of Dreams" by Daniel Nayeri

Vivian Gornick, who covered the tour for the Village Voice, reported that “the F.T.A. was surrounded, wherever it went, by agents of the C.I.D., the O.S.I., the C.I.A., the local police.”

From New York Times ● Mar. 4, 2021

For weeks after Hizbullah’s arrest, the C.I.D. didn’t produce him before a magistrate, as required by law, and he was permitted to meet at length with his lawyers only after long delays.

From New York Times ● Jul. 2, 2020

The C.I.D. put Jameel on a watch list.

From New York Times ● Jul. 2, 2020

Though the PX thinks bribe-taking is about cleaned up, C.I.D. finds there is null evidence of payoffs around.

From Time Magazine Archive

The moment he was gone, the first CI.D. man jumped into Major Major’s office through the window and wanted to know who the second C.I.D. man was.

From "Catch-22" by Joseph Heller

After two weeks at CID headquarters, the two men were moved to Insein Prison.

From The Wall Street Journal ● Oct. 1, 2026

When Castillo returned to Myanmar in June, he was detained at the airport by officers from the country’s Criminal Investigation Department, or CID.

From The Wall Street Journal ● Oct. 1, 2026

"CID was one of the few crime shows on television back then and my parents didn't mind me watching it because of its family-friendly content," Ms Shah says.

From BBC ● Dec. 7, 2024

Priya Ravi, 40, remembers waiting eagerly for each CID episode to air when she was a child.

From BBC ● Dec. 7, 2024

There was an inquiry, of course, and a week-long air search, and for a time the Tra Bong compound went crazy with MP and CID types.

From "The Things They Carried" by Tim O'Brien

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