ASCOMYCETES n.
A large class of higher fungi distinguished by septate hyphæ, and by having their spores formed in asci, or spore sacs. It comprises many orders, among which are the yeasts, molds, mildews, truffles, morels, etc. -- As`co*my*ce"tous (#), a.
ASTRONOMY n.
The science which treats of the celestial bodies, of their magnitudes, motions, distances, periods of revolution, eclipses, constitution, physical condition, and of the causes of their various phenomena.