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British Dictionary definitions for order of magnitude

order of magnitude

noun
  1. the approximate size of something, esp measured in powers of 10the order of magnitude of the deficit was as expected; their estimates differ by an order of magnitude Also called: order
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

order of magnitude in Culture

order of magnitude

A rough measure of the size, or magnitude, of something, expressed as a power of ten: “The mass of the Earth is of the order of magnitude of 1024 kilograms.” Also, the range of values that such a rough statement applies to.

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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.