The American Heritage® Dictionary of the English Language, 4th Edition
adj. Marked by interest in and behavior directed toward others or the environment as opposed to or to the exclusion of self; gregarious or outgoing: "the hearty and extroverted types who dominated public life in Boston” ( Thomas P. O'Neill, Jr.)
adj. Possessing the characteristic property of an extrovert. Outgoing, comfortable in social interactions.
the GNU version of the Collaborative International Dictionary of English
adj. directed outward; marked by an interest in other people or concerned primarily with external reality.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. not introspective; examining what is outside yourself
adj. being concerned with the social and physical environment
adj. at ease in talking to others
Word Usage
"Even though we call their extroverted Maestro cousins “performers,” in fact many fine performers, including some of the greatest actors and singer-songwriters, are introverted Maestros."