Definify.com
Webster 1913 Edition
Azoic
A-zo′ic
,Adj.
 [Gr. 
ἀ 
priv. + [GREEK] life, from [GREEK] to live.] 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 
. rocks. azoic