1) therefore, so then, wherefore
Part of Speech: particle
Probably from G142 (through the idea of drawing a conclusion); a particle denoting an inference more or less decisive (as follows): - haply, (what) manner (of man), no doubt, perhaps, so be, then, therefore, truly, wherefore. Often used in connection with other particles, especially G1065 or G3767 (after) or G1487 (before). Compare also G687.
|a as a result||89.46|
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 ἄρα; click on the second column to search for that grammatical form of the root ἄρα; click on the third column to search for that word and grammatical form; click on the total to search for the root ἄρα.