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 is located in Chicago, and it was completed in the year 1973. It was the tallest building in the world for 25 years. It has a height of 1,451 feet with 108 stories. It is one of the city of Chicagoâs most popular tourist destinations.