semi-

(Latin: half, partly, twice)

semitone
An interval equal to a half tone in the standard diatonic scale. Also called half step, halftone.
semitranslucent (adjective), more semitranslucent, most semitranslucent
Pertaining to being slightly clear or transmitting brightness to a minimal degree: The semitranslucent window in the door to the front hall of the neighbor's house allowed for some luster in the dark hall space without having to turn on the electric lamps.
semitransparent (noun), more semitransparent, most semitransparent
semitropical
semi-vitrification
1. The state of being imperfectly vitrified.
2. A substance imperfectly vitrified.
semiyearly