What does camera mean?
A camera is a device that captures images — either still photographs or moving video — by gathering light through a lens and recording it on film or, in modern instruments, on an electronic sensor. The word comes from Latin 'camera', meaning a vaulted room, shortened from 'camera obscura' ('dark room'), the name of the early optical device whose projected image inspired photography. Today 'camera' covers everything from smartphones and webcams to professional cinema equipment, and it has entered everyday idiom: people smile 'for the camera', speak 'on camera' when filmed, and work 'behind the camera' as directors or crew. In legal contexts, 'in camera' describes proceedings held privately rather than in open court. Related words such as 'chamber' and 'bicameral' share its Latin root, which also gave us 'comrade' and 'camaraderie'. It is a neutral, universally understood word, essential vocabulary in an age saturated with imagery.
nounAn optical device that captures and records still images or video by focusing light onto a photosensitive surface or electronic sensor.
- The standard modern sense: any device, film-based or digital, used to take photographs or record video.
- In law, the phrase 'in camera' refers to proceedings carried out privately, in closed session rather than in public court.
- Historical and architectural use: camera meant a vaulted room or chamber, now largely obsolete except in phrases like 'in camera' and in the compound 'camera obscura'.
"She raised her camera and captured the mountain at sunrise."
"The wedding photographer adjusted his camera before the ceremony began."
"The committee debated the sensitive matter in camera before releasing its findings."
Regular plural; standard in both British and American English. Used both for physical devices and figuratively (e.g., 'security cameras').
"Security cameras were installed throughout the building."
A camera literally means 'a room' — it's short for camera obscura, Latin for 'dark room', because early image-making devices were exactly that.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of camera
Camera derives directly from Latin 'camera' meaning a vaulted room or chamber, itself borrowed from Greek 'kamara'. The photographic sense arose in the early 19th century as a shortening of 'camera obscura', Latin for 'dark room', the box-like optical device used since the Renaissance to project images. The same Latin root produced English 'chamber' via Old French, as well as 'bicameral' and 'unicameral' (describing legislative chambers), and more distantly 'comrade' and 'camaraderie', from words denoting people who share a room.
Related word forms
How camera is actually used
Almost always singular when referring to a single device ('the camera'); the plural 'cameras' is routine for multiple devices. In journalism, 'on camera' means being filmed, while 'off camera' means out of view or unrecorded. The legal/legalistic use survives mainly in the fixed expression 'in camera'. Register is neutral — equally at home in technical writing and everyday speech.