Abbott-Smith Manual Greek Lexicon
κατοπτρίζω (G2734)
1 *† κατοπτρίζω ( κάτοπτρον , a mirror ), to show as in a mirror . Mid., to see oneself mirrored (v. MM, Exp. , xv); c. acc. rei (R, txt., but v. mg.), to reflect as a mirror : II Co 3:18 (cf. Abbott, Essays , 94).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain