1) any casting down of a thing from its proper place or state, displacement
2) a throwing of the mind out of its normal state, alienation of mind, whether such as makes a lunatic or that of a man who by some sudden emotion is transported as it were out of himself, so that in this rapt condition, although he is awake, his mind is drawn off from all surrounding objects and wholly fixed on things divine that he sees nothing but the forms and images lying within, and thinks that he perceives with his bodily eyes and ears realities shown him by God.
3) amazement, the state of one who, either owing to the importance or the novelty of an event, is thrown into a state of blended fear and wonderment
Part of Speech: noun feminine
Citing in TDNT: 2:449, 217
From G1839; a displacement of the mind, that is, bewilderment, "ecstasy": - + be amazed, amazement, astonishment, trance.
|b ecstatic vision||33.489|
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root ἔκστασις; click on the second column to search for that grammatical form of the root ἔκστασις; click on the third column to search for that word and grammatical form; click on the total to search for the root ἔκστασις.