| 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. |
| semi- pref.
[Middle English, from Latin sēmi-, half; see sēmi- in Indo-European roots.] |
semi- pref.
Half: semicanal.
Partial; partially: semiconscious.
Resembling or having some of the characteristics of: semilunar.
| semi-
A prefix that means "half," (as in semicircle, half a circle) or "partly, somewhat, less than fully," (as in semiconscious, partly conscious). |