(architecture) Initialism of gross square footage: the total sum of the floorspace over every level of a building.

plural of GSF

(US) Initialism of government-sponsored enterprise. / Initialism of ground service equipment. / Initialism of ground support equipment.

plural of GSE

Alternative form of GSOH

(US) Initialism of General Services Administration.

(aviation, travel) Initialism of general sales agreement. A contact between an airline and a travel company to provide customer service in a region where the airline does not have an office.

plural of GSR

Initialism of gunshot residue.

plural of GSW