[ (ek-spuh-nen-shuhl) ]
Growth of a system in which the amount being added to the system is proportional to the amount already present: the bigger the system is, the greater the increase. (See geometric progression.)
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In everyday speech, exponential growth means runaway expansion, such as in population growth.
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.