xponsor is incorrectly written, and should be written as "sponsor" being its meaning: It is not xponsor, that does not exist, but sponsor, Word which is recognized and which is used to refer to the person, both legal and physical, they are sponsoring, support or financed activities or projects to others. They are common in all types of events, festivals, conferences, sports activities, leisure etc. They tend to be brands that want to be known and through sponsorship, it is a way of advertising.