panspermist

[English, ., pansperm ( ia ); -ist.] One who upholds the system of Panspermia (q. v.). "By the panspermists , or the opponents of spontaneous generation, it is alleged that the production of Bacteria, Vibrios, Monads, and Infusoria, in organic infusions, is due simply to the fact that the atmosphere, and probably the fluid itself, is charged with innumerable germs which, obtaining acce to the fluid, and finding there favorable conditions, are developed into living beings."-Nicholson: Zoology (ed. 1878), p. 43.