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string theory

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noun Physics.

See under string (def. 3).

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for string theory

Scientific definitions for string theory

string theory
[ strĭng ]

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for string theory

string theory

In physics, a theory that views subatomic particles as string-like objects floating in space-time rather than as point-like objects. Space-time in string theory can have up to nine dimensions of space, plus the dimension of time.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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