ἀποτελεσματικός

ή, όν, ἡ
A. productive of material objects, τέχνη ἀ., opp. θεωρητική and πρακτική, S.E. M. 11.197: generally, productive, τινός Sor. 1.48, Gal. 19.475.
II. astrologically influential, Ptol. Tetr. 90; of or for astrology, λόγος Vett. Val.332.1; ‐κή (sc. τέχνη), ἡ, Eust. 900.34, Simp. in Ph. 293.11; ἀποτελεσματικά, name of a work on astrology by Paul.Al.; οἱ ‐κοί astrologers, Eust. 193.7.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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