Azoic/eɪˈzəʊɪk/ Definition 1 of 2Pro Tip 1/3Historical Term Often found in scientific or historical content discussing earth's early history. During the azoic era, the planet's surface was inhospitable to life. Pro Tip 2/3Rare Usage While accurate, 'azoic' is rarely used in casual conversations; mostly scientific texts. His report detailed the azoic nature of early Earth. Pro Tip 3/3Avoid Confusion 'Azoic' refers to a lifeless period, not to be confused with uninhabited places like deserts. Deserts are arid, not azoic, as they still harbor life.