Medical Definition of dorsiflexion. : flexion in a dorsal direction; especially : flexion of the foot in an upward directionâcompare plantar flexion.
Willis Tower. The Willis Tower, built as and still commonly referred to as Sears Tower, is a 108-story, 1,450-foot (442.1 m) skyscraper in Chicago, Illinois, United States.
Willis is located at 30Â°25â²22â³N 95Â°28â²44â³W / 30.42278Â°N 95.47889Â°W / 30.42278; -95.47889 (30.422640, -95.478829). According to the United States Census Bureau, the city has a total area of 3.3 square miles (8.5 km2), all of it land.