What is the meaning of Semi?

A semi-detached house.

A semi-trailer; a tractor-trailer; an eighteen-wheeler; an artic.

A semifinal.

A partial erection of the penis.

A semiautomatic firearm.

to sow

mid, mediocre, not bad, not good

sort of, kind of, pretty

semi, partial tumescence

shoot, sprout

sprouting

plural of seme

Rōmaji transcription of せみ

Rōmaji transcription of セミ

Alternative form of semen (to sort out)

third-person active present subjunctive of semja

masculine plural of semo

first-person singular present/imperative active of seti (to sleep)

semifinal, semi-final

plural of usemi

Clipping of semifinal.

Source: wiktionary.org