Quotes by Nomenclature To that class we may leave it to refine the vernacular dialects of the country, to enrich those dialects with terms of science borrowed from the Western nomenclature, and to render them by degrees fit vehicles for conveying knowledge to the great mass of the population. Thomas B. Macaulay nomenclature class country A catalyst is a substance which alters the velocity of a chemical reaction without appearing in the final products. Wolfgang Ostwald nomenclature finals science «12