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semifinal
semifinished
semifluid
semiformal
semifreddo
semigloss
semigroup
semihard
semilethal
semiliterate
Sémillon
semilogarithmic
semilunar
semilunar cartilage
semilunar valve
semimajor axis
semimetal
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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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