The headword might stem from the Excerpta Constantiniana, De caerimoniis 632.17, where it refers to τάξιν καὶ ἀξίαν (also 633,11 κ. ἀξίαν ) to describe the cursus honorum of a high official covering "every single rank up to the one of protospatharios). As an adverb, καθεκάστην recurs at 509.5 and 522.20 in the phrase τῆι κ. κυριακῆι , "every single Sunday". For other instances of the adverb see Eustathius, ad Il. 2.87-90 τῶν κ. γινομένων , ad Od. 20.149 ἕνα κ. κομίζειν "to bring one after another", ad Od. 22.444 τὰ κ. χρήσιμα "the things useful for every purpose". A few other hints about the usage of the cognate adjective καθέκαστος, -η, -ον appear in later Aristotelian commentators: cf. Alexander of Aphrodisias, In Aristotelis De anima 83.7 τόδε τε καὶ καθέκαστον ; Anon. In Aristotelis Rhetoricam 1.1 τῶι καθεκάστωι .
[1] This adverb is mostly used in philosophy and especially by commentators on Aristotle (very common in Alexander of Aphrodisias). Christian writers apparently prefer the form καθέκαστον , which is also well-attested in Galen.