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.
CHICAGO â The Sears Tower used to be the tallest building in the world. The Willis Tower is now the second tallest in America, and could drop to third. Construction of the Nordstrom Tower is underway in New York. Once work is done, the Nordstrom Tower is expected to pass the Willis Tower by three feet.