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prebiological

[pree-bahy-uh-loj-i-kuh l]
adjective
  1. of or relating to chemicals or environmental conditions existing before the development of the first living things.
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Also pre·bi·ot·ic [pree-bahy-ot-ik] /ˌpri baɪˈɒt ɪk/.

Origin of prebiological

First recorded in 1950–55; pre- + biological
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for prebiotic

prebiotic

adjective
  1. occurring or existing before the emergence of life
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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