Wiktionary
abiotically
adv. In an abiotic manner; in the absence of life. (mid 20th century.)(R:SOED5: page=5)
Usage examples of "abiotically".
Thus, the earliest self-replicating molecules depended on the supply of abiotically produced organic compounds washed down off the land into a few favored environments, and we can imagine some primordial, microscopic Malthus concluding gloomily that life would forever be restricted to thin strips of coastal shallows and tidal pools.