The definition of sponsor is to provide funding for something, or to pledge to fund something.(verb)
When you pay for an event to take place, this is an example of a situation where you sponsor an event.
See sponsor in Webster's New World College Dictionary
Origin: L, surety < spondere, to promise solemnly < IE base *spend-, to bring a libation, vow > Gr spendein, to promise, spondē, libation
See sponsor in American Heritage Dictionary 4
Origin: Late Latin spōnsor, sponsor in baptism
Origin: , from Latin, surety
Origin: , from spōnsus
Origin: , past participle of spondēre, to pledge; see spend- in Indo-European roots.
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