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semiautobiographical
semiautomatic
semiautonomous
semibold
semibreve
semibreve rest
semicentennial
semicircle
semicircular canal
semiclassical
semicolon
semicoma
semicomatose
semiconductor
semiconductor diode
semiconductor laser
semiconscious
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semi

sem·i [ sémmee, sémmī ] (plural sem·is)


noun 
Definition:
 
1. vehicles 
Same as  tractor-trailer


2. vehicles 
Same as  semitrailer (sense 1)


3. sports  ( informal )
Same as  semifinal


[Early 20th century. Shortening]
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