The traditional, classical or popular (meaning of the people) ballad has been seen as beginning with the wandering minstrels of late medieval Europe. From the end of the 15th century there are printed ballads that suggest a rich tradition of popular music.
Definition of gasohol for English Language Learners. : a mixture of gasoline and ethanol that is used as a fuel for engines.
Ethylene vinyl alcohol (EVOH) is a formal copolymer of ethylene and vinyl alcohol. Because the latter monomer mainly exists as its tautomer acetaldehyde, the copolymer is prepared by polymerization of ethylene and vinyl acetate to give the ethylene vinyl acetate (EVA) copolymer followed by hydrolysis.