Definition of: sponsor

(spon′sər) noun
1. One who makes himself responsible for a statement by, or the debt or duty of, another; a surety.
2. One who makes the required professions and promises for an infant at baptism and becomes responsible for its religious training; a godfather or godmother.
3. A business firm or enterprise that assumes all the costs of a radio or television program which advertises its product or service.
—v.t. To act as sponsor for; answer or vouch for.
—spon·so·ri·al (spon·sôr′ē·əl, -sō′rē-) adjective
—spon′·sor·ship noun