Rosseland mean absorption coefficient
Rosseland mean absorption coefficient
[′rȯs·lənd ′mēn əb′sȯrp·shən ‚kō·i‚fish·ənt] (optics)
A coefficient of opacity that is the inverse of a weighted mean of the transmission coefficient over all frequencies.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.