Ancient Greek philosophers claimed there were five elements: earth, water, air, fire, and a fifth substance that made up objects in the heavens. This idea was passed down through the ages to Latin-speaking scholars who called the fifth element quintessence — from the Latin words quintus, meaning “fifth,” and essentia, meaning “being.” Eventually, the word’s meaning evolved into our modern definition of an ideal, a potentially heavenly example of something — you know, like a hamburger.