sponsor

Syllabification: (spon·sor)

Pronunciation: /ˈspänsər/

Definition of sponsor

1a person or organization that provides funds for a project or activity carried out by another, in particular.
an individual or organization that pays some or all of the costs involved in staging a sporting or artistic event in return for advertising.
a person who pledges to donate a certain amount of money to another person after they have participated in a fund-raising event organized on behalf of a charity.
chiefly US a business or organization that pays for or contributes to the costs of a radio or television program in return for advertising.

2a person who introduces and supports a proposal for legislation:a leading sponsor of the bill
a person taking official responsibility for the actions of another:they act as informants, sponsors, and contacts for new immigrants
a godparent at a child’s baptism.
(especially in the Roman Catholic Church) a person presenting a candidate for confirmation.

[with object]

1provide funds for (a project or activity or the person carrying it out):Joe is being sponsored by his church
pay some or all of the costs involved in staging (a sporting or artistic event) in return for advertising.
pledge to donate a certain sum of money to (someone) after they have participated in a fund-raising event organized on behalf of a charity.
(often as adjective sponsored) pledge to donate money because someone is taking part in (such an event):they raised $70 by a sponsored walk

2introduce and support (a proposal) in a legislative assembly:Senator Hardin sponsored the bill
propose and organize (negotiations or talks) between other people or groups:the U.S. sponsored negotiations between the two sides

Origin:

mid 17th century (as a noun): from Latin, from spondere 'promise solemnly'. The verb dates from the late 19th century

The ending of sponsor is spelled -or.

Definition of sponsor in the British & World English dictionary