decad

A group, set, or series of ten , particularly:

“a decade of soldiers”

A set of resistors, capacitors, etc. connected so as to provide even increments between one and ten times a base electrical resistance.

The interval between any two quantities having a ratio of 10 to 1.

“There are decades between 1.8 and 18, between 25 and 250 and between 0.03 and 0.003.”