Etymology
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camera (n.)

1708, "vaulted building; arched roof or ceiling," from Latin camera "a vault, vaulted room" (source also of Italian camera, Spanish camara, French chambre), from Greek kamara "vaulted chamber, anything with an arched cover," which is of uncertain origin. A doublet of chamber. Old Church Slavonic komora, Lithuanian kamara, Old Irish camra all are borrowings from Latin.

The word also was used from early 18c. as a short form of Modern Latin camera obscura "dark chamber" (a black box with a lens that could project images of external objects), contrasted with camera lucida (c. 1750, Latin for "light chamber"), which uses prisms to produce on paper beneath the instrument an image which can be traced of a distant object.

This sense was expanded to become the word for "picture-taking device used by photographers" (a modification of the camera obscura) when modern photography began c. 1840. The word was extended to television filming devices from 1928. Camera-shy is attested from 1890. Camera-man is from 1908.

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off-camera (adv.)

"outside the range of a film or television camera," 1944, from off (prep.) + camera.

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camcorder (n.)
"portable video camera recorder," 1982, from camera and recorder.
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unicameral (adj.)
1853, from uni- "one" + Late Latin camera "chamber" (see camera) + -al (1).
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bicameral (adj.)
"having two chambers," 1832; see bi- "two" + Late Latin camera "chamber" (see camera) + -al (1).
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cameral (adj.)
"of or pertaining to a chamber," 1762, from Medieval Latin camera "a chamber, public office, treasury," in classical Latin "a vaulted room" (see camera, and compare chamber) + -al (1).
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camber (n.)
"convexity on an upper surface," 1610s, nautical term, from Old French cambre, chambre "bent," from Latin camurum (nominative camur) "crooked, arched;" related to camera. As a verb, "become slightly arched," from 1620s. Related: Cambered; cambering.
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comrade (n.)

1590s, "one who shares the same room," hence "a close companion," from French camarade (16c.), from Spanish camarada "chamber mate," or Italian camerata "a partner," from Latin camera "vaulted room, chamber" (see camera). In Spanish, a collective noun referring to one's company. In 17c., sometimes in jocular use misspelled comrogue. Used from 1884 by socialists and communists as a prefix to a surname to avoid "Mister" and other such titles. Related: Comradely; comradeship.

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chamberlain (n.)

mid-13c., etymologically "person who manages a chamber or chambers," but by the time the word reached English it had evolved to describe an important royal officer of various duties, such as "one who attends a king or person of high rank in his or her private chamber," and especially "keeper of the treasure-chamber;" from Old French chamberlenc "chamberlain, steward, treasurer" (Modern French chambellan), from a Germanic source (perhaps Frankish *kamerling; compare Old High German chamarling, German Kämmerling), from Latin camera "chamber, room" (see camera) + Germanic diminutive suffix -ling. As "chief financial officer of the king's household" from mid-15c.

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