TRI-


Meaning of TRI- in English

/ traɪ; NAmE / combining form

(in nouns and adjectives) three; having three :

tricycle

triangular

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WORD ORIGIN

from Latin and Greek , from Latin tres , Greek treis three.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.