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biogenesis vs. abiogenesis

[bahy-oh-jen-uh-sis] / ˌbaɪ oʊˈdʒɛn ə sɪs /
Also biogeny

noun

  1. the production of living organisms from other living organisms.

[ey-bahy-oh-jen-uh-sis, ab-ee-oh-] / ˌeɪ baɪ oʊˈdʒɛn ə sɪs, ˌæb i oʊ- /

noun

Biology.
  1. the theory that the earliest life forms on earth developed from nonliving matter.

  2. Also called spontaneous generation.  the now discredited theory that living organisms can arise spontaneously from inanimate matter.