panspermia(redirected from Pansperma)
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Related to Pansperma: Directed panspermia
The theory that microorganisms or biochemical compounds from outer space are responsible for originating life on Earth and possibly in other parts of the universe where suitable environmental conditions exist.
[Greek panspermiā, mixture of all seeds : pan-, pan- + sperma, seed; see sperm1.]
(Philosophy) a 19th-century evolutionary theory that precursors to life exist in space and will develop on finding suitable conditions