Decade (log scale)
UNIT OF LOGARITHMIC FREQUENCY INTERVAL, CORRESPONDING TO A RATIO OF 10 BETWEEN THE FREQUENCIES
Decade (Log scale); Factor of ten; Factor of 10
One decade (symbol decISO 80000-3:2006 Quantities and Units – Space and time) is a unit for measuring ratios on a logarithmic scale, with one decade corresponding to a ratio of 10 between two numbers."Decade, a factor, multiple, or ratio of 10", Andrew Butterfield & John Szymanski (2018) A Dictionary of Electronics and Electrical Engineering, fifth edition, Oxford University Press,