Entry lacking, Adler reports, in ms F.
The headword (again under rho 199) might stem from the Excerpta Constantiniana, De caerimoniis 632.17, where it refers to ta/cin kai\ a)ci/an (also 633,11 k. a)ci/an) to describe the cursus honorum of a high official covering "every single rank up to the one of protospatharios). As an adverb, kaqeka/sthn recurs at 509.5 and 522.20 in the phrase th=| k. kuriakh=|, "every single Sunday". For other instances of the adverb see Eustathius, ad Il. 2.87-90 tw=n k. ginome/nwn, ad Od. 20.149 e(/na k. komi/zein "to bring one after another", ad Od. 22.444 ta\ k. xrh/sima "the things useful for every purpose". A few other hints about the usage of the cognate adjective kaqe/kastos, -h, -on appear in later Aristotelian commentators: cf. Alexander of Aphrodisias, In Aristotelis De anima 83.7 to/de te kai\ kaqe/kaston; Anon. In Aristotelis Rhetoricam 1.1 tw=| kaqeka/stw|.
[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 kaqe/kaston, which is also well-attested in Galen.