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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.


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.


C.I.D. 3 American  

abbreviation

  1. Criminal Investigation Department of Scotland Yard.


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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of C.I.D.

First recorded in 1900–05

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“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

Joel Kim Booster’s ideal Sunday Funday involves breakfast burritos, Ginger Rogers Beach, Chinese food, El Cid and an afterparty at his place.

From Los Angeles Times Jan. 15, 2026

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

From Barron's Dec. 24, 2025

But knowing that thousands of fans will be looking to keep the party going after the Rose Bowl show, who knows if the next Chappell Roan will be striding through El Cid on Friday.

From Los Angeles Times Oct. 9, 2025

“So all that talk of Cid was nothing. You just wait for people to have accidents?”

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

Shani Abeysakara, the C.I.D. director who worked on the handful of human rights cases that made headway under the previous president, has found himself before the commission more than 40 times.

From New York Times Apr. 12, 2022

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

From New York Times Jul. 2, 2020

Also in on the action is another Jury pal, Tom Brownell, a former C.I.D. operative.

From New York Times Nov. 1, 2019

After ten days of such secretive investigation, the C.I.D. had enough evidence to crack down.

From Time Magazine Archive

He became more circumspect in his work as a result of the visit from the second C.I.D. man.

From "Catch-22" by Joseph Heller

So, a show like CID often featured plots that closely resembled those of CSI: Crime Scene Investigation, an American crime drama.

From BBC Dec. 7, 2024

Most Indians will instantly recognise this dialogue from the popular detective show CID, which ran from 1998 to 2018, making it one of India's longest-running television shows.

From BBC Dec. 7, 2024

Interestingly, the target audience of CID, when it was released in the 1990s, was children in the age group of six to 14.

From BBC Dec. 7, 2024

"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

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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