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.
An extrovert is a friendly person who enjoys talking to and being with other people. Extroverts love parties, talking on the phone, and meeting new people. This noun has a specialized sense in psychology, and its opposite is introvert.. Psychologists sometimes kick it old school and spell it extravert.