cam

1 of 3

noun (1)

1
: a rotating or sliding piece (such as an eccentric wheel or a cylinder with an irregular shape) in a mechanical linkage used especially in transforming rotary motion into linear motion or vice versa
2
: camshaft
an engine with a single overhead cam

cam

2 of 3

noun (2)

: camera
especially : video camera

CAM

3 of 3

abbreviation

1
computer-aided manufacturing
2
complementary and alternative medicine

Examples of cam in a Sentence

Recent Examples on the Web
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Noun
The emergency landing was recorded on dash-cam video by a witness driving on I-75. Angie Dimichele, Sun Sentinel, 24 Apr. 2026 The scandal surrounding the off-field shenanigans between the Patriots head coach and an NFL reporter just took a kiss-cam turn. Staff and Wire Reports, Boston Herald, 23 Apr. 2026 Fans who can't visit Washington can check out Linh Mai on the zoo's elephant cam. ABC News, 22 Apr. 2026 Mauna kea, Hawaii One of the highest-quality sky cams comes from Mauna Kea, home to world-class observatories like the Subaru Telescope. Daisy Dobrijevic, Space.com, 21 Apr. 2026 See All Example Sentences for cam

Word History

Etymology

Noun (1)

perhaps from French came, from German Kamm, literally, comb, from Old High German kamb

First Known Use

Noun (1)

1777, in the meaning defined at sense 1

Noun (2)

1969, in the meaning defined above

Time Traveler
The first known use of cam was in 1777

Browse Nearby Words

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Cite this Entry

“Cam.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cam. Accessed 25 Apr. 2026.

Kids Definition

cam

1 of 2 noun
: a device by which circular motion may be transformed into stop-and-start or back-and-forth motion

cam

2 of 2 noun
Etymology

Noun

perhaps from French came "cam," from German Kamm, literally, "comb"

Medical Definition

CAM

abbreviation
1
2
complementary and alternative medicine
According to a 2002 survey by the National Center for Health Statistics, 36 percent of adults in the United States used some form of complementary and alternative medicine (CAM), including naturopathy, relaxation techniques, chiropractic, yoga, massage, and diets.In-Sung Yoo, The News Journal (Wilmington, Delaware)

Geographical Definition

Cam

geographical name

river 40 miles (64 kilometers) long in Cambridgeshire, east central England, flowing into the Ouse River

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