1) to make hard, harden
2a) to render obstinate, stubborn
2b) to be hardened
2c) to become obstinate or stubborn
Part of Speech: verb
Citing in TDNT: 5:1030, 816
From G4642; to indurate, that is, (figuratively) render stubborn: - harden.
|cause to be stubborn||88.226|
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 σκληρύνω; click on the second column to search for that grammatical form of the root σκληρύνω; click on the third column to search for that word and grammatical form; click on the total to search for the root σκληρύνω.