Ester is a form of the name Esther, used in several languages. The name Esther itself is of Persian origin, meaning 'star'. In the context of chemistry, 'ester' refers to a compound derived from an acid where the hydrogen atom of at least one acidic hydroxyl group is replaced by an organyl group. This term is widely used in organic chemistry to describe a class of compounds with significant applications in various industries, including fragrances, plastics, and lubricants.