Thessalonica = "victory of falsity"
1) a famous and populous city, situated on the Thermaic Gulf, the capital of the second division of Macedonia and the residence of a Roman governor and quaestor
Part of Speech: noun proper locative
From Θεσσαλός Thessalos (a Thessalian) and G3529; Thessalonice, a place in Asia Minor: - Thessalonica.
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 Θεσσαλονίκη; click on the second column to search for that grammatical form of the root Θεσσαλονίκη; click on the third column to search for that word and grammatical form; click on the total to search for the root Θεσσαλονίκη.