decibels above 1 femtowatt

decibels above 1 femtowatt

[′des·ə·bəlz ə¦bəv ¦wən ′fem·tō‚wät]

(electricity)

A power level equal to 10 times the common logarithm of the ratio of the given power in watts to 1 femtowatt (10^-15 watt). Abbreviated dBf.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.