1) saving, bringing salvation
2) he who embodies this salvation, or through whom God is about to achieve it
3) the hope of (future) salvation
Part of Speech: adjective
Citing in TDNT: 7:1021, 1132
Neuter of the same as G4991 as (properly concrete) noun; defender or (by implication) defence: - salvation.
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 σωτήριος; click on the second column to search for that grammatical form of the root σωτήριος; click on the third column to search for that word and grammatical form; click on the total to search for the root σωτήριος.