rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water

a rigorous or crucial appraisal

a rigorous or crucial appraisal

a rigorous or crucial appraisal

a rigorous or crucial appraisal

a rigorous or crucial appraisal

(chemistry) the amount of free acid present in fat as measured by the milligrams of potassium hydroxide needed to neutralize it

volumetric analysis using standard solutions of acids to measure the amount of a base present

milk fermented by bacteria; used to treat gastrointestinal disorders

long-legged spotted cat of Africa and southwestern Asia having nonretractile claws; the swiftest mammal; can be trained to run down game