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  • cam
    cam
    noun
    a disk or cylinder having an irregular form such that its motion, usually rotary, gives to a part or parts in contact with it a specific rocking or reciprocating motion.
  • Cam
    Cam
    noun
    a river in E England flowing NE by Cambridge, into the Ouse River. 40 miles (64 km) long.
  • CAM
  • Cam.
    Cam.
    abbreviation
    Cambridge.
  • -cam
    -cam
    combining form
    camera
Synonyms

cam

1 American  
[kam] / kæm /

noun

  1. Machinery. a disk or cylinder having an irregular form such that its motion, usually rotary, gives to a part or parts in contact with it a specific rocking or reciprocating motion.

  2. Automotive Slang. camshaft.


verb (used with object)

cammed, camming
  1. to provide (a machine part or mechanism) with a cam or cams.

cam 2 American  
[kam] / kæm /

noun

  1. a camera, especially one that records video (often used in combination, as in ).

    She's a professional photographer who uses state-of-the-art cams.


Cam 3 American  
[kam] / kæm /

noun

  1. a river in E England flowing NE by Cambridge, into the Ouse River. 40 miles (64 km) long.


CAM 4 American  
[kam] / kæm /
Cam. 5 American  

abbreviation

  1. Cambridge.


CAM 1 British  

abbreviation

  1. complementary and alternative medicine

  2. computer-aided manufacture

  3. botany crassulacean acid metabolism: a form of photosynthesis, first described in crassulaceous plants, in which carbon dioxide is taken up only at night

  4. Cameroon (international car registration)

"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

-cam 2 British  

combining form

  1. camera

    webcam

"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

Cam 3 British  
/ kæm /

noun

  1. a river in E England, in Cambridgeshire, flowing through Cambridge to the River Ouse. Length: about 64 km (40 miles)

"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

cam 4 British  
/ kæm /

noun

  1. a slider or roller attached to a rotating shaft to give a particular type of reciprocating motion to a part in contact with its profile

"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 cam1

< Dutch or Low German kam, kamm. See comb

Origin of cam2

First recorded in 1975–80; shortening of camera 1 ( def. )

Origin of CAM4

First recorded in 1965–70


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:

For the next two hours he watched the Inter-Con guys on the security cam pushing on doors that wouldn’t yield.

From The Wall Street Journal ● Oct. 2, 2026

Several schoolteachers described bringing the nest cam into their classrooms as a learning tool.

From Los Angeles Times ● Aug. 11, 2026

A bald eagle believed to be Jackie, star of a Big Bear nest cam, is in stable condition at a rehabilitation center after being rescued over the weekend, according to the nonprofit behind the livestream.

From Los Angeles Times ● Jul. 20, 2026

Detectives "continue to appeal for witnesses and anyone driving in the vicinity at the time who may have captured footage on dash cam to contact them", the spokesman added.

From BBC ● Jul. 12, 2026

The cam allows the jumar to slide upward without hindrance, but it pinches the rope securely when the device is weighted.

From "Into Thin Air" by Jon Krakauer

Cam Eddy founded Impause in February, around when military conflict started to ramp up in the Middle East, pushing up the price of oil.

From MarketWatch ● Oct. 13, 2026

The Giants scored two late touchdowns to force overtime but, when within range of a winning field goal, they ran the ball with Cam Skattebo, who fumbled to lose possession.

From BBC ● Oct. 12, 2026

“I think we’ve got the best talent in the league,” Yankees ace Cam Schlittler said.

From The Wall Street Journal ● Oct. 8, 2026

Sale, a 10-time All-Star, posted a 2.16 earned-run average this season, trailing only projected Cy Young winners Jacob Misiorowski and Cam Schlittler.

From Los Angeles Times ● Oct. 4, 2026

“They didn’t have no fighting around Cam Ranh Bay,” was the answer.

From "Fallen Angels" by Walter Dean Myers

Regulation CTX and Regulation CAM would establish requirements for CFTC-registered exchanges that offer these crypto assets for trading.

From The Wall Street Journal ● Oct. 5, 2026

Although scientists have long known how CAM works, exactly how it evolved within the genus Clusia, and why different species use it in different ways, has remained unclear.

From Science Daily ● Sep. 23, 2026

Do not visit a CAM practitioner instead of seeing your GP.

From BBC ● Jul. 31, 2024

CAM is what makes the Western militaries so good, it was designed with the Soviet military approach in mind.

From Salon ● Jul. 3, 2023

The clumsy signature CAM was probably intended for Campi, the real author, and its genuineness is not above suspicion.

From Giorgione by Herbert Cook

Fitzpatrick echoed those sentiments, saying: "I love Cam. He's such a nice guy. He's so laid back. I knew we were going to have a good day, and it was."

From BBC ● Mar. 15, 2026

“Hope the best for Cam. Obviously, had some great times with him, some great memories with him as well, but excited for Kyren.”

From Los Angeles Times ● Sep. 22, 2023

“I fully trust Cam. Cam has the keys to the car,” Dickert said.

From Seattle Times ● Sep. 4, 2022

"I wanted to set it up for Cam. All the pressure is on the other guy to get it to 1-1 and that was my job."

From BBC ● Nov. 27, 2021

“Maarsii, Cam. Really, truly, in all the languages I know.”

From "Legendary Frybread Drive-In" by Cynthia Leitich Smith

Some of their protection is pre-place bolts, but some is “traditional” gear — like self camming devices and passive protection such as “nuts.”

From New York Times ● Jan. 14, 2015

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