Semi- is a bound morpheme meaning 'half' and is used as a prefix or combining form in many technical terms (e.g., semifinal, semicolon) and in some specialized nouns. It also appears as a standalone affix in certain technical vocabularies. In pronunciation, it is typically unstressed when part of longer words. As a prefix, it attaches to a base word and influences meaning without adding a full syllable of stress of its own.
Full pronunciation guide
