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sponsor

[spon-ser] /ˈspɒn sər/
noun
1.
a person who vouches or is responsible for a person or thing.
2.
a person, firm, organization, etc., that finances and buys the time to broadcast a radio or television program so as to advertise a product, a political party, etc.
3.
a person who makes a pledge or promise on behalf of another.
4.
a person who answers for an infant at baptism, making the required professions and assuming responsibility for the child's religious upbringing; godfather or godmother.
verb (used with object)
5.
to act as sponsor for; promise, vouch, or answer for.
Origin
1645-1655
1645-55; < Latin spōnsor guarantor, equivalent to spond(ēre) to pledge + -tor -tor, with dt > s
Related forms
sponsorial
[spon-sawr-ee-uh l, -sohr-] /spɒnˈsɔr i əl, -ˈsoʊr-/ (Show IPA),
adjective
sponsorship, noun
unsponsored, adjective
Synonyms
1. patron, backer; guarantor. 2. advertiser. 5. guarantee, finance, back, underwrite.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for sponsor ship

sponsor

/ˈspɒnsə/
noun
1.
(a person or group that provides funds for an activity, esp)
  1. a commercial organization that pays all or part of the cost of putting on a concert, sporting event, etc
  2. a person who donates money to a charity when the person requesting the donation has performed a specified activity as part of an organized fund-raising effort
2.
(mainly US & Canadian) a person or business firm that pays the costs of a radio or television programme in return for advertising time
3.
a legislator who presents and supports a bill, motion, etc
4.
Also called godparent
  1. an authorized witness who makes the required promises on behalf of a person to be baptized and thereafter assumes responsibility for his Christian upbringing
  2. a person who presents a candidate for confirmation
5.
(mainly US) a person who undertakes responsibility for the actions, statements, obligations, etc, of another, as during a period of apprenticeship; guarantor
verb
6.
(transitive) to act as a sponsor for
Derived Forms
sponsorial (spɒnˈsɔːrɪəl) adjective
sponsorship, noun
Word Origin
C17: from Latin, from spondēre to promise solemnly
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 sponsor ship

sponsor

n.

1650s, from Late Latin sponsor "sponsor in baptism," in Latin "a surety, guarantee," from sponsus, past participle of spondere "give assurance, promise solemnly" (see spondee). Sense of "person who pays for a radio (or, after 1947, TV) program" is first recorded 1931. The verb is attested from 1884, "to favor or support;" commercial broadcasting sense is from 1931.

Online Etymology Dictionary, © 2010 Douglas Harper
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