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semiarid
semiautobiographical
semiautomatic
semiautonomous
semibold
semibreve
semibreve rest
semicentennial
semicircle
semicircular canal
semiclassical
semicolon
semicoma
semicomatose
semiconductor
semiconductor diode
semiconductor laser
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semilethal
sem·i·le·thal [ sèmmee lth'l, sèmmī lth'l ]


adjective 
Definition:
 
lethal more than half of time: lethal in more than 50 percent but fewer than 100 percent of cases
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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