Definition of panspermy in US English:

panspermy

noun

historical
  • Panspermia.

Origin

Mid 19th century; earliest use found in Robert Mayne (1808–1868). From (i) post-classical Latin panspermia or its etymon (ii) ancient Greek πανσπερμία panspermia; compare -y.

Pronunciation

panspermy

/panˈspəːmi/