UBS Dictionary of the Greek New Testament

Sense 1: mighty act, great deed

Semantic entry: 76.8

Semantic domains: Power, Force

Definition: a deed of importance and power

Notes: In some contexts it is not possible to distinguish readily between τέρας [source selector 000001][b] (76.7: δύναμις / 76.7: κράτος), δύναμις [source selector 000002][c] (76.7: δύναμις / 76.7: κράτος), and μεγαλεῖον, for all may refer to miraculous events, and in a number of instances these terms are used in pairs, primarily to emphasize rather than to distinguish different kinds of miraculous events. All of these expressions may indicate a supernatural component with important religious implications, especially since the performance of such miracles implies divine power.