chad

chad

[chad]

Origin:
1945–50; origin uncertain

Dictionary.com Unabridged

Chad

[chad]
noun
1.
a lake in Africa at the junction of four countries: Cameroon, Chad, Niger, and Nigeria. 5000 to 10,000 sq. mi. (13,000 to 26,000 sq. km) (seasonal variation).
2.
Official name Republic of Chad. a republic in N central Africa, E of Lake Chad: a member of the French community; formerly part of French Equatorial Africa. 501,000 sq. mi. (1,297,590 sq. km). Capital: N'Djamena.
4.
a male given name.
French Tchad (for defs 1, 2).
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
chad (tʃæd)
 
n
the small pieces of cardboard or paper removed during the punching of holes in computer printer paper, paper tape, etc
 
[C20: perhaps based on chaff1]

Chad (tʃæd)
 
n
1.  French name: Tchad a republic in N central Africa: made a territory of French Equatorial Africa in 1910; became independent in 1960; contains much desert and the Tibesti Mountains, with Lake Chad in the west; produces chiefly cotton and livestock; suffered intermittent civil war from 1963 and prolonged drought. Official languages: Arabic; French. Religion: Muslim majority, also Christian and animist. Currency: franc. Capital: Ndjamena. Pop: 8 854 000 (2004 est). Area: 1 284 000 sq km (495 750 sq miles)
2.  Lake Chad a lake in N central Africa: fed chiefly by the Shari River, it has no apparent outlet. Area: at fullest extent 10 000 to 26 000 sq km (4000 to 10 000 sq miles), varying seasonally; it has shrunk considerably in recent years

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

chad
also Mr. Chad graffiti drawing of a head peering over a fence or wall, with the caption, "Wot, no ______?" (the U.S. version usually had "Kilroy was here"), protesting shortages and rationing, 1945, British, of unknown origin.

Chad
African nation, former Fr. colony (Tchad), independent since 1960, named for Lake Chad, from a local word meaning "lake, large expanse of water."

chad
"hanging flap or piece after a hole is punched in paper," unknown to most people until the 2000 U.S. presidential election (when the outcome hinged on partially punched paper ballots in some Florida counties), attested by 1930, of unknown origin.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Cultural Dictionary

Chad definition


Landlocked desert republic in north-central Africa, bordered by Sudan to the east; the Central African Republic to the south; Cameroon, Niger, and Nigeria to the west; and Libya to the north. N'Djamena is its capital and largest city.

Note: Chad was under French control until 1960.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Slang Dictionary

chad

/chad/ n.
1. [common] The perforated edge strips on printer paper, after they have been separated from the printed portion. Also called selvage, perf, and ripoff.
2. obs. The confetti-like paper bits punched out of cards or paper tape; this has also been called `chaff', `computer confetti', and `keypunch droppings'. It's reported that this was very old Army slang, and it may now be mainstream; it has been reported seen (1993) in directions for a card-based voting machine in California.

Historical note: One correspondent believes `chad' (sense 2) derives from the Chadless keypunch (named for its inventor), which cut little u-shaped tabs in the card to make a hole when the tab folded back, rather than punching out a circle/rectangle; it was clear that if the Chadless keypunch didn't make them, then the stuff that other keypunches made had to be `chad'. There is a legend that the word was originally acronymic, standing for "Card Hole Aggregate Debris", but this has all the earmarks of a backronym.

computer confetti

n. Syn. {chad}. Though this term is common, this use of punched-card chad is not a good idea, as the pieces are stiff and have sharp corners that could injure the eyes. GLS reports that he once attended a wedding at MIT during which he and a few other guests enthusiastically threw chad instead of rice. The groom later grumbled that he and his bride had spent most of the evening trying to get the stuff out of their hair.

perf

/perf/ n. Syn. {chad} (sense 1). The term `perfory' /per'f*-ree/ is also heard. The term {perf} may also refer to the perforations themselves, rather than the chad they produce when torn (philatelists use it this way).
FOLDOC
Computing Dictionary

chad definition

jargon, printer
/chad/ (Or "selvage" /sel'v*j/ (sewing and weaving), "perf", "perfory", "snaf"). 1. The perforated edge strips on paper for sprocket feed printers, after they have been separated from the printed portion.
The term perf may also refer to the perforations themselves, rather than the chad they produce when torn.
[Why "snaf"?]
2. (Or "chaff", "computer confetti", "keypunch droppings") The confetti-like bits punched out of punched cards or paper tape which collected in the chad box.
One of the Jargon File's correspondents believed that "chad" derived from the chadless keypunch.
[Jargon File]
(1997-07-18)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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