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semiconductor laser
semiconscious
semiconservative
semidarkness
semidesert
semidetached
semidiameter
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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

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