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.
Another building in New York might also get the tallest residential building in the world title when the Nordstorm Tower is completed in 2018. The building will rise to 1,775 feet at its spire, making it just a foot shorter than the Freedom Tower.