Lexical Definition

‎καθημερινός‎ kathēmerinós (kath-ay-mer-ee-nos') daily ^G:A
from ‎κατά‎ and ‎ἡμέρα‎

daily.

• quotidian

Abbott-Smith

**† καθημερινός, -ή, -όν (< καθ’ ἡμέραν), [in LXX: Jth 12:15*;]
daily (MGr. καθημερνός): Ac 6:1.†

Abbott-Smith References

Liddell-Scott-Jones

καθημερινός-ιος,

Doric dialect καθᾱμ-, α, ον, day by day, daily (καθ᾽ ἡμέραν), neuter as adverb, [Refs 5th c.BC+]; μοῖρα κ. [Refs 5th c.BC+]:—later also καθημερινός, ή, όν, δίαιτα [LXX+1st c.AD+]; of fevers, quotidian, later word for ἀμφημερινός (which see), especially of non-remittent quotidians, [Refs 2nd c.AD+]; φρίξ [Refs 4th c.AD+]

_{LSJ Scripture Refs: Acts.6.1}