Quick Definition
I overshadow, envelop
Strong's Definition
to cast a shade upon, i.e. (by analogy) to envelop in a haze of brilliancy; figuratively, to invest with preternatural influence
Derivation: from G1909 (ἐπί) and a derivative of G4639 (σκιά);
KJV Usage: overshadow
Thayer's Greek Lexicon
ἐπισκιάζω; (imperfect ἐπεσκιαζον, Luk_9:34 L marginal reading T Tr text WH); future ἐπισκιάσω; 1 aorist ἐπεσκίασα; to throw a shadow upon, to envelop in shadow, to overshadow: τίνι, Act_5:15. From a vaporous cloud that casts a shadow the word is transferred to a shining cloud surrounding and enveloping persons with brightness: τινα, Mat_17:5; Luk_9:34; τίνι, Mar_9:7. Tropically, of the Holy Spirit exerting creative energy upon the womb of the virgin Mary and impregnating it (a use of the word which seems to have been drawn from the familiar O. T. idea of a cloud as symbolizing the immediate presence and power of God): with the dative Luk_1:35. (In secular authors generally with an accusative of the object and in the sense of obscuring: Herodotus 1, 209; Sophocles, Aristotle, Thcophr., Philo, Lucian, Herodian, Geoponica. the Sept. for ρΘλΗκ to cover, Psa_90:4 (); Psa_139:8 (); for ωΘΡλΗο, Exo_40:29-35ἐπεσκίαζεν ἐπί τήν σκηνήν ἡ νεφέλη; (cf. Winer's Grammar, § 52, 4, 7).)
Mounce Concise Greek Dictionary
ἐπισκιάζω episkiazō 5x
to overshadow, Mat_17:5 ; met. to shed influence upon, Luk_1:35
Abbott-Smith Greek Lexicon
ἐπι -σκιάζω ,
[in LXX : Exo_40:35 ( H7931 ), Psa_91:4 ; Psa_140:7 ( H5526 ), Pro_18:11 * ;]
to throw a shadow upon, overshadow: c . dat ., Act_5:15 ; of a shining (Mt, l.c ., and cf. Exo_40:29 ; Exo_40:35 , 2Ma_2:8 ) cloud, c . dat ., Mar_9:7 ; c . acc , Mat_17:5 , Luk_9:34 ; metaph . ( cf. Pss, Pr, ll.c .), of the Holy Spirit, Luk_1:35 .†
Moulton & Milligan — Vocabulary of the Greek NT
ἐπισκιάζω [page 244]
ἐπισκιάζω is found in the mid. in Vett. Val. p. 111 .1 γίνονται δὲ ἑτερόχροες συγγενήματα ἔχοντες φαλακροὶ ἐπισκιαζόμενοι ἢ ὀφθαλμοπόνοι κτλ ., and for the subst. see ib. pp. 3 .9 , 109 .30 , etc. The LXX usage is discussed by Anz Subsidia , p. 289, and Hatch Essays , p. 4.
Liddell-Scott — Intermediate Greek Lexicon
ἐπισκιάζω fut. άσω "to throw a shade upon, overshadow", Hdt. , NTest. :—Pass., λαθραῖον ὄμμ᾽ ἐπεσκιασμένη "keeping a hidden watch", Soph.
STEPBible — Tyndale Abridged Greek Lexicon
ἐπι-σκιάζω
[in LXX: Exo.40:35 (שָׁכַן), Psa.91:4 140:7 (סָכַךְ), Pro.18:11 * ;]
to throw a shadow upon, overshadow: with dative, Act.5:15; of a shining (Mt, l.with, and cf. Exo.40:29, 35, 2Ma.2:8) cloud, with dative, Mrk.9:7; with accusative, Mat.17:5, Luk.9:34; metaphorically (cf. Pss, Pr, ll.with), of the Holy Spirit, Luk.1:35.†
(AS)