κεφάλαιος κεφάλαιος, α, ον κεφαλή of the head: metaph., like Lat. capitalis, principal, Ar. as Subst., κεφάλαιον, ου, τό, the head, Ar. the chief or main point, the sum of the matter, Pind., Thuc., etc.; ἐν κεφαλαίῳ, or ὡς ἐν κ., εἰπεῖν to speak summarily, Xen., etc.; ἐν κεφαλαίοις ὑπομνῆσαι, ἀποδεῖξαι, περιλαβεῖν τι Thuc. of persons, the head or chief, Luc. of money, the capital, Lat. caput, Opp. to interest, Plat., etc.: the sum total, Dem. the crown, completion of a thing, a crowning act of wrong, Dem.; κ. ἐπιτιθέναι ἐπί τινι, Lat. corollam imponere rei, Plat.