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1 : half semicircle. 2 : partly : not completely.

Other definitions for semi (2 of 2)

a combining form borrowed from Latin, meaning “half,” freely prefixed to English words of any origin, now sometimes with the senses “partially,” “incompletely,” “somewhat”: semiautomatic; semidetached; semimonthly; semisophisticated.

1. A prefix that means "half," as in semicircle, half a circle. 2.

After all, “semi” usually means that it's “part of” something… ... The answer is pretty simple: semi-truck or semi is actually short for semi-trailer truck.25 feb. 2015

1 : a nonautomotive freight vehicle to be drawn by a motortruck. 2 usually truck-trailer : a combination of a truck trailer and its motortruck.

Definition of semipermeable

: partially but not freely or wholly permeable specifically : permeable to some usually small molecules but not to other usually larger particles a semipermeable membrane.

Noun. (en noun) (astronomy, astrology) Half of the celestial sphere, as divided by either the ecliptic or the celestial equator .

Demi- is a prefix that means half, partially, or something that is slightly inferior. The prefix demi– is derived from the Old French word demi meaning half, derived from the Latin word dimidius.

Demi is a feminine given name with Greek and Latin roots. It was originally a nickname of Demetria, the feminine form of the masculine name Demetrius, which is itself the Latin and English spelling of the Greek name Demetrios.