Webster's English Dictionary

Enter the word to look up:

naphtha

naph.tha \'naf-th*, 'nap-\ n [L, fr. Gk, of Iranian origin; akin to Per 
   neft naphtha] 1: PETROLEUM  2: any of various volatile often flammable 
   liquid hydrocarbon mixtures used  chiefly as solvents and diluents