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.
Which is the tallest building in US? Currently the Willis Tower (formerly Sears Tower) in Chicago is the tallest building in the US at 1,451 feet. One World Trade Center is under construction in New York City on â¦the site of the former World Trade Center. One World Trade Center will become the tallest building in the US at 1,776 feet.