Meaning of SEMI in English

SEMI

I. ˈse-mē also -ˌmī noun

( plural sem·is )

Etymology: short for semidetached

Date: 1912

chiefly British : a semidetached house

II. ˈse-ˌmī also -mē noun

( plural sem·is )

Date: 1942

: semitrailer

III. same as 2 noun

( plural sem·is )

Date: 1942

: semifinal — often used in plural

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.