from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The study of the sources, dispersion, and effects of airborne biological materials, such as pollen, spores, and microorganisms.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The study of the dispersion of airborne biological materials, as pollen, spores, microorganisms, or viruses.
aero- + biology (Wiktionary)