τριπλασιάζω

A. to triple, take three times, Apollod. 2.4.8, Plu. 2.1028b, Dam. Pr. 98:—Pass., Plu. Arist. 24:—hence τριπλασι‐ασμός, ὁ, a tripling, Id. 2.1028c (pl.).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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