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1. One who assumes responsibility for another person or a group during a period of instruction, apprenticeship, or probation.
2. One who vouches for the suitability of a candidate for admission, as to an organization.
3. A legislator who proposes and urges adoption of a bill.
4. Christianity One who presents a candidate for baptism or confirmation; a godparent.
5. One that finances a project, event, or organization directed by another person or group, such as a business enterprise that pays for radio or television programming in return for advertising time.
tr.v. spon·sored, spon·sor·ing, spon·sors
To act as a sponsor for.
[Late Latin spōnsor, sponsor in baptism, from Latin, surety, from spōnsus, past participle of spondēre, to pledge; see spend- in Indo-European roots.]
spon·so′ri·al (-sôr′ē-əl) adj.
denoting an activity organized to raise money for a charity in which sponsors agree to donate money on completion of the activity, or a specified period or amount of it, by participants: a sponsored walk.