You searched for: “astroplankton
astroplankton (s) (noun), astroplankton (pl)
A theory that there may be living material drifting in space: Some people think that there might be microorganisms or spores floating around in space, which are called astroprlankton, and are perhaps able to start life after reaching an appropriate environment.
This entry is located in the following units: astro-, astr- (page 8) plankto-, plankt-, -plankton (page 1)