λογιστ-ικός · logist-ikos — LSJ
skilled or practised in calculating, Pl. Tht. 145a, X. Mem. 1.1.7; οἱ φύσει λ. Pl. R. 526b; of a mathematician, AP 11.267: Subst. ἡ -κή (with or without τέχνη), practical arithmetic, the art of arithmetic, opp. ἀριθμητική (the science of number), Pl. Grg. 450d, 451b, R. 525a, al.; so τὸ -κόν Id. Chrm. 174b; ἡ λ., opp. γεωμετρία, Archyt. 4.
endued with reason, rational, ζῷα Arist. de An. 434a7; [τὸ] λ. [μόριον τῆς ψυχῆς] ib. 432a25; λ. ὄρεξις, opp. ἄλογος, Id. Rh. 1369a2; τὸ λ. (sc. τῆς ψυχῆς) the reasoning faculty, Pl. R. 439d, cf. Arist. Top. 128b38; = τὸ βουλευτικόν, Id. EN 1139a12.
using oneʼs reason, reasonable, X. HG 5.2.28, Men. Epit. 541.
-κόν, τό, expenses of the λογιστεία, Inscr.Délos 395.13, 399 A 96 (ii B. C.).