- astroplankton
[astroplankton 词源字典]
- "Hypothetical living material such as microorganisms or spores present in space, postulated as able to initiate or spread life on reaching a suitable environment", 1950s; earliest use found in John Burdon Sanderson Haldane (1892–1964), geneticist.[astroplankton etymology, astroplankton origin, 英语词源]