Bible Greek and Hebrew Dictionaries combined for Word Studies
Genesis Chapter 1
venomous 2342 # therion {thay-ree'-on}; diminutive from the same as 2339; a dangerous animal: -- ({venomous}, wild) beast.
viper 0660 ## &eph`eh {ef-eh'}; from 659 (in the sense of hissing); an asp or other venomous serpent: -- {viper}.