Hebrew and Greek Strong's Dictionary with all the definitions plus combined with every place that word is used in the definitions.
Complete index of every word used in both the Hebrew and Greek Strong's Dictionary in English Word order.
Hebrew and Greek Expanded Dictionary
leviathan 03882 ## livyathan {liv-yaw-thawn'} ; from 03867 ; a wreathed animal , i . e . a serpent (especially the crocodile or some other large sea-monster) ; figuratively , the constellation of the dragon ; also as a symbol of Bab . : -- {leviathan} , mourning .