Topological Polar Surface Area (tPSA), a physicochemical property describing the polarity of molecules.
local government area | San Francisco Bay Area | Important Bird Area | Unincorporated area | Greater Toronto Area | Urban area | metropolitan area | New York metropolitan area | Bay Area Rapid Transit | Order of the Polar Star | urban area | European Economic Area | surface-to-air missile | Area 51 | Greater Los Angeles Area | Chicago metropolitan area | Surface-to-air missile | Surface | South Pacific Area | Schengen Area | Riemann surface | American Viticultural Area | Wide Area Augmentation System | Special Protection Area | Local area network | local area network | Delaware Water Gap National Recreation Area | Billings Metropolitan Area | Zarya (polar ship) | The Polar Express |