of or relating to chemicals or environmental conditions existing before the development of the first living things.
Also pre·bi·ot·ic [pree-bahy-ot-ik] /ˌpri baɪˈɒt ɪk/.
Origin of prebiological
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
occurring or existing before the emergence of life
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012