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, left, in Chicago and 1 World Trade Center in New York. Credit Associated Press. Mr. Emanuelâs tone reflects the pride Chicagoans take in their cityâs architecture and its status as the home of the countryâs first âskyscraper,â the 10-story Home Insurance Building.