Dictionary
em•is•siv•i•ty
Pronunciation: (em"u-siv'i-tē, ē'mu-), [key]—
n. Thermodynamics.
the ability of a surface to emit radiant energy compared to that of a black body at the same temperature and with the same area.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.