1) the act of picking out, choosing
1a) of the act of God's free will by which before the foundation of the world he decreed his blessings to certain persons
1b) the decree made from choice by which he determined to bless certain persons through Christ by grace alone
2) a thing or person chosen
2a) of persons: God's elect
Part of Speech: noun feminine
Citing in TDNT: 4:176, 505
From G1586; (divine) selection (abstractly or concretely): - chosen, election.
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 ἐκλογή; click on the second column to search for that grammatical form of the root ἐκλογή; click on the third column to search for that word and grammatical form; click on the total to search for the root ἐκλογή.