Copyright Â© by The McGraw-Hill Companies, Inc. McCulloch v. Maryland 1. McCulloch v. Maryland. John Marshall. OVERVIEW. McCulloch v. Maryland established the basis for the expansive authority of the U.S. Congress. The Supreme Court held that the necessary and proper clause of the U.S.
Medical Definition of ambivert. : a person having characteristics of both extrovert and introvert.
Introvert comes from Latin intro-, inward, and vertere, turning.. It describes a person who tends to turn inward mentally. Introverts sometimes avoid large groups of people, feeling more energized by time alone. The opposite of an introvert is an extrovert, who finds energy in interactions with others.