intro-

from The Century Dictionary.

• An abbreviation of introduction.
• A Latin adverb used as a prefix, signifying ‘within, into, in.’

from the GNU version of the Collaborative International Dictionary of English.

• A prefix signifying within, into, in, inward.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun formally making a person known to another or to the public
• noun a brief introductory passage to a piece of popular music