QUASI-

/ ˈkweɪzaɪ; NAmE ; -saɪ; ˈkwɑ:zi/ combining form (in adjectives and nouns)

1.

that appears to be sth but is not really so :

a quasi-scientific explanation

2.

partly; almost :

a quasi-official body

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WORD ORIGIN

from Latin quasi as if, almost.