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chad

[chad] /tʃæd/
noun, Computers.
1.
a small paper disk or square formed when a hole is punched in a punch card or paper tape.
Origin
1945-1950
1945-50; origin uncertain

Chad

[chad] /tʃæd/
noun
1.
Lake, 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.
3.
4.
a male given name.
French Tchad (for defs 1, 2).
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for chad

chad

/tʃæd/
noun
1.
the small pieces of cardboard or paper removed during the punching of holes in computer printer paper, paper tape, etc
Word Origin
C20: perhaps based on chaff1

Chad

/tʃæd/
noun
1.
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: 11 193 452 (2013 est). Area: 1 284 000 sq km (495 750 sq miles) French name Tchad
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 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for chad
n.

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"), in reaction to shortages and rationing, 1945, British, of unknown origin.

"hanging flap or piece after a hole is punched in paper," a word 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.

Chad

n.

African nation, former French colony (Tchad), independent since 1960, named for Lake Chad, which is from a local word meaning "lake, large expanse of water." An ironic name for such a desert country.

Online Etymology Dictionary, © 2010 Douglas Harper
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chad in Culture

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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chad in Technology

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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