destitute of any vestige of organic life, or at least of animal life; anterior to the existence of animal life; formed when there was no animal life on the globe; as, the azoic. Rocks.
(Science: geology) azoic age, the age preceding the existence of animal life, or anterior to the paleozoic tome. Azoic is also used as a noun, age being understood. See archaean, and eozoic.
Origin: gr. Priv. _ life, from to live.