ταχυτής

ῆτος, ᾶτος
A. quickness, swiftness, of dogs, Od. 17.315; ταχυτῆτος ἄεθλα, of the race, Il. 23.740; τ. ποδῶν Xenoph. 2.1, 17, Pi. O. 1.95; ἥσσων ἐς ταχυτῆτα Hdt. 3.102, cf. Anaxag. 9, Archyt. 1, Pl. La. 192a, Arist. Mete. 342a5; of persons, hastiness, Id. EN 1150b27.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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