The Collaborative International Dictionary
Panspermic \Pan`sper"mic\, a. (Biol.) Of or pertaining to panspermy; as, the panspermic hypothesis.
Wiktionary
a. (context biology English) Relating to panspermy or to panspermia.
Usage examples of "panspermic".
Arcturus, founder and sole prophet of the Panspermic Church of First Contact, replied with the weary resignation of one who was accustomed to being mocked by an unbelieving world.
These were the Archaea, that third order of life along with bacteria and eucarya -and in this case, also citizens of the panspermic cloud which four billion years before fell on Mars from space, having flown many light-years from their point of spontaneous generation around an early second-generation star.
Then later Paul Bunyan, the distant descendant of these panspermic Archaea, came back to Mars to find it cold and ostensibly empty, though some of the old ones still persisted, golluming around in various submartian volcanic percolations.