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out-

1.
a prefixal use of out, adv., occurring in various senses in compounds (outcast, outcome, outside), and serving also to form many transitive verbs denoting a going beyond, surpassing, or outdoing in the particular action indicated (outbid, outdo, outgeneral, outlast, outstay, outrate).
Origin
Middle English; Old English ūt-; see out
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for out-

out-

prefix
1.
excelling or surpassing in a particular action: outlast, outlive
2.
indicating an external location or situation away from the centre: outpost, outpatient
3.
indicating emergence, an issuing forth, etc: outcrop, outgrowth
4.
indicating the result of an action: outcome
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
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3
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