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panspermia

[pan-spur-mee-uh]
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noun Biology.
  1. the theory that life exists and is distributed throughout the universe in the form of germs or spores that develop in the right environment.
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Also pan·sper·ma·tism [pan-spur-muh-tiz-uh m] /pænˈspɜr məˌtɪz əm/, pan·sper·my [pan-spur-mee] /ˈpænˌspɜr mi/.

Origin of panspermia

1835–45; < New Latin < Greek panspermía mixture of all seeds. See pan-, -sperm, -ia
Related formspan·sper·mic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018