spon·sor n
1: a legislator who introduces and supports a legislative proposal (as a bill or amendment)
2: a person who assumes responsibility for some other person (as an immigrant) or thing
3 a: one that securitizes assets
b: one that promotes, advocates, or favors a business venture (as investment in a security or limited partnership)
sponsor vb
spon·sor·ship n
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.