Usage: 3 forms in 5 verses
Form Translated As     In Verse(s)
καταδείξασ introducing LXX.Gen.4.21LXX.Isa.43.15LXX.Isa.45.18
κατέδειξεν introduced LXX.Isa.41.20
κατέδειξε introduced LXX.Isa.40.26

Liddell-Scott-Jones

καταδείκνυμι (katadeiknumi) to introduce G:V

καταδείκνυμι,

Ionic dialect aorist κατέδεξα, discover and make known, τὸν Ταρτησσὸν οὗτοί εἰσι οἱ καταδέξαντες [Refs 5th c.BC+]; Νεκῶ.. πρώτου καταδέξαντος (i.e. τὴν Λιβύην περίρρυτον ἐοῦσαν) [Refs]: followed by a conjunction, κατέδειξεν ἐναργῶς, ὡς.. [Refs 4th c.BC+] —passive, with participle, κατεδέδεκτο ἐοῦσα οὐδὲν Χρηστή had been proved to be.., [Refs 5th c.BC+]

__2 invent and teach, introduce, προαγωγούς [Refs 5th c.BC+]: c.infinitive, show how to do, ἐπὶ τὰ κράνεα λόφους ἐπιδέεσθαι Κᾶρές εἰσι οἱ καταδέξαντες [Refs 5th c.BC+]