AUTUMN n.
and winter, often called "the fall." Astronomically, it begins in the northern temperate zone at the autumnal equinox, about September 23, and ends at the winter solstice, about December 23; but in popular language, autumn, in America, comprises September, October, and November.
CONDENSATION n.
ar weight, often resulting in an increase of density, as the condensation of oxygen into ozone, or of acetone into mesitylene. Condensation product (Chem.), a substance obtained by the polymerization of one substance, or by the union of two or more, with or without separation of some unimportant side products. -- Surf…