Definition of semi- in English:

semi-

Syllabification: semi-

prefix

  • 1Half: semicircular
  • 1.1Occurring or appearing twice in a specified period: semiannual
  • 2Partly; in some degree or particular: semiconscious
  • 2.1Almost: semidarkness

Origin

from Latin; related to Greek hēmi-.

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Word of the day astrogation
Pronunciation: ˌastrəˈgāSHən
noun
(in science fiction) navigation in outer space