What does FAS stand for?

Quicksilver Fast Save Lisp File

Fatty Alcohol Sulfates (surfactants)

Flame Absorption Spectroscopy

Fascia

Tar paper. Installed under the roof shingles. Normally 15 lb. or 30 lb. A board fixed horizontally to the lower ends of the rafters, to which guttering may be fixed. Also forms the outside board of a boxed eave OR The flat surface located at the outer end of a roof overhang or cantilever end or also a decorative trim or panel which projects from the face of a wall.

Fire alarm station

Final Approach Segment

That segment of an instrument approach procedure in which alignment and descent for landing are accomplished.

Financial and Administrative Services

Filter Air Sampler