Philadelphia Ranked 7th Among Most Cursed Sports Cities In America. PHILADELPHIA - JUNE 09: The Chicago Blackhawks celebrate after defeating the Philadelphia Flyers 4-3 in overtime and win the Stanley Cup in Game Six of the 2010 NHL Stanley Cup Final at the Wachovia Center on June 9, 2010 in Philadelphia, Pennsylvania.
Duplex (telecommunications) - Half duplex. 1  A half-duplex (HDX) system provides communication in both directions, but only one direction at a time (not simultaneously).
Philadelphia defines a duplex dwelling as a dwelling occupied as the home or residence of two (2) families, under one (1) roof, each family occupying a single unit. Other major cities do not use the term duplex in their zoning or land-use bylaws. San Francisco and Vancouver use the term Two-family dwelling.