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 Tower. Willis Tower, formerly Sears Tower, is the headquarters of Willis North America's Midwest Region. Standing at 1,450 feet and 110 stories high, Willis Tower is the tallest building in the Western Hemisphere. Willis currently occupies more than 140,000 square feet and three floors of the building.