Lexical Definition

‎ἐρευνάω‎ ereunáō (er-yoo-nah'-o) to look for/into G:V
apparently from ‎ἐρέω‎ (through the idea of inquiry)

search.

Usage: 13 forms in 17 verses
Form Translated As     In Verse(s)
ἐραύνησον do search John.7.52
ἐραυνῶντεσ inquiring 1Pet.1.11
ἐραυνῶν searching Rom.8.27Rev.2.23
ἐραυνᾷ searches 1Cor.2.10
ἐραυνᾶτε You diligently search John.5.39
ηρεύνησεν searched LXX.Gen.31.33
ηρεύνησε And he searched LXX.Gen.44.12
he searched LXX.Gen.31.33
searched LXX.Gen.31.35
ηρεύνησασ you searched LXX.Gen.31.37
ερευνών In searching LXX.Joel.1.7
ερευνήσωσι that they should search LXX.2Sam.10.3
ερευνήσουσι they will search LXX.1Kgs.20.6
ερευνήσατε Search LXX.2Kgs.10.23LXX.Jer.50.26
ερευνά searches LXX.Prov.20.27

Abbott-Smith

ἐραυνάω, -ῶ late form of ἐρευνάω (Rec., ll. c.; cf. Bl., § 6, 1; M, Pr., 46), [in LXX, ἐρευν- (exc. I Ch 19:3 A), for חָפַשׂ pi., חָקַר, etc. ;]
to search, examine: Jo 7:52; c. acc rei, Jo 5:39, Ro 8:27, I Co 2:10, Re 2:23; seq. orat. obliq., I Pe 1:11.†
SYN.: v.s. ἐξετάζω

Abbott-Smith References

Book Refs
1 Chronicles 19:3
John 5:39 · 7:52
Romans 8:27
1 Corinthians 2:10
1 Peter 1:11
Revelation 2:23

Liddell-Scott-Jones

ἐρευνάω-άω,

also ἐρευνάω-ίω [Refs], and ἐραυνάω (which see):— seek or search for, search after, track, ἴχνι᾽ ἐρευνάωῶντες κύνες ϊσαν [ἐρευνάωῶν 8th c.BC: Ilias Homerus Epicus “Illiad” 18.321; τεύχε᾽ ἐ. 8th c.BC: Odyssea Homerus Epicus “Odyssey” 22.180; τὴν σοφὴν εὐβουλίαν 4th-5th c.BC: Aeschylus Tragicus “Prometheus Vinctus” 1038; θεῶν βουλεύματ᾽ 5th c.BC: Pindarus Lyricus “Fragmenta.” 61; νεκρούς 5th c.BC: Euripides Tragicus “Medea” 1318; κακούργους 5th-6th c.BC: Xenophon Historicus “Institutio Cyri (Cyropaedia)” 1.2.12; ἄν τινα οἴωμαι σοφὸν εἶναι 5th-6th c.BC: Plato Philosophus “Apologia” 23b. compare 41b; τὸ γραμματεῖον 4th c.BC: Demosthenes Orator 25.61 ">Refs 8th c.BC+]; ὧν..ἂν θεὸς χρείαν ἐρευνάω the things whereof he seeks after the use, i.e. whatever things he finds serviceable, [Refs 5th c.BC+]

__2 search, explore a place, [Refs 5th c.BC+]; τεναγέων ῥοάς [ἐρευνάωῶν">Refs 5th c.BC+] thou wilt find by searching, [Refs 5th c.BC+]
__3 inquire after, φάτιν [ἐρευνάωῶν σπέρμ᾽ ὅπως γένοιτό μοι [prev. author] “Med.” 669 ">Refs 5th c.BC+]; examine into a question, [Refs 5th c.BC+] —also in middle, διάνοια πᾶσαν φύσιν -ωμένη[Refs 2nd c.AD+]
__4 with infinitive, seek to do, [Refs 3rd c.BC+]