Lexical Definition

‎ὀπτάνομαι‎ optánomai (op-tan'-om-ahee) to appear G:V
a (middle voice) prolonged form of the primary (middle voice) ; which is used for it in certain tenses; and both as alternate of ‎ὁράω‎

appear, look, see, shew self.

Usage: 17 forms in 55 verses
Form Translated As     In Verse(s)
ὤφθησαν there appeared Acts.2.3
ὤφθην I have appeared Acts.26.16
ὤφθη He has appeared Luke.24.34
appeared Mark.9.4Luke.1.11Acts.7.2Acts.7.30Acts.13.31Acts.16.9Rev.11.19Rev.12.1
beheld 1Tim.3.16
he appeared Acts.7.261Cor.15.51Cor.15.61Cor.15.71Cor.15.8
it appeared Matt.17.3
was seen Rev.12.3
ὄψονται they will behold Matt.24.30John.19.37Rom.15.21Rev.22.4
will behold Acts.2.17
will see Matt.5.8
will they behold Matt.28.10Mark.13.26Luke.21.27
ὄψησθε you may behold Luke.13.28
ὄψεται will behold Luke.3.6John.3.36Heb.12.14Rev.1.7
ὄψεσθε will you behold Mark.16.7
you will behold Matt.26.64Matt.27.24Matt.28.7Mark.14.62Luke.17.22John.1.39John.1.51Acts.18.15Acts.20.25
ὄψεσθέ you will behold John.16.16John.16.17John.16.19
ὀψόμεθα we will behold 1John.3.2
ὀφθείσ having appeared Acts.9.17
ὀφθήσομαί I will appear Acts.26.16
ὀφθήσεται will appear Heb.9.28
ὀφθέντοσ having appeared Acts.7.35
ὀφθέντεσ having appeared Luke.9.31
ὀπτανόμενοσ appearing Acts.1.3
ωπτάνοντο seen LXX.1Kgs.8.8
[ὤφθη Appeared Luke.22.43

Abbott-Smith

ὀπτάνω, [in LXX: III Ki 8:8 (ראה ni.), To 12:19*;]
late present as from ὤφθην (= ὁράω); mid., ὀπτάνομαι, to allow oneself to be seen, to appear. c. dat., Ac 1:3. (For exx. from π., v. Deiss., LAE, 79, 2525; MM, ii, xviii.).†

Abbott-Smith References

Book Refs
1 Kings 8:8
Acts 1:3

Liddell-Scott-Jones

meaning of: εἴδω

ὀπτάνομαι,

passive, to be seen, [LXX]:—so ὀπτάνομαι,[LXX+5th c.BC+]:—an active ὀπταίνω in [Refs]

LSJ Scripture Refs: LXX.Num.14.14Acts.1.3