aspergillus

noun

1. Any of many molds, of the genus Aspergillus, many of which are pathogenic.

   “Aspergillus, named in the 18th century for its resemblance to a device used to sprinkle holy water [aspergillum], has brought humanity benefits as well as jeopardy. Some species have uses ranging from industrial chemistry to the fermentation of soy sauce and sake, but others are potentially hazardous to health.”