string theory definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Particle Physics any theory in which a string () is considered to be the basic unit of matter
string theory - Computer Definition
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The belief that all physical matter is made up of vibrating elements called "strings." Officially known as "superstring theory," it differs from traditional physics, in which all matter is made up of ball-like particles.
string theory - Cultural Definition
The New Dictionary of Cultural Literacy Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
string theory - Science Definition
Any of various theories in physics hypothesizing that space-time has more than four dimensions, and that some of the dimensions are exceedingly small and stringlike in shape. Elementary particles in string theory are understood as standing waves in such space-time strings, rather than as pointlike objects. String theories attempt to unify gravity with the other fundamental forces.