THE WORLD POPULATION AND THE TOP TEN. COUNTRIES WITH THE HIGHEST POPULATION. The ten countries with the largest population in the world today. are China, India, United States, Indonesia, Brazil, Pakistan, Nigeria, Bangladesh, Russia and Mexico. TOP TEN COUNTRIES WITH THE HIGHEST POPULATION.
Ester Definition. An ester is an organic compound where the hydrogen in the compound's carboxyl group is replaced with a hydrocarbon group. Esters are derived from carboxylic acids and (usually) an alcohol. While carboxylic acid has the -COOH group, the hydrogen is replaced by a hydrocarbon in an ester.
â¢ REDUCER (noun). The noun REDUCER has 2 senses: 1. a substance capable of bringing about the reduction of another substance as it itself is oxidized; used in photography to lessen the density of a negative or print by oxidizing some of the slackened silver. 2. pipefitting that joins two pipes of different diameter.