order_of_magnitude
1. [ noun ] a degree in a continuum of size or quantity
Synonyms: order
Examples:

"it was on the order of a mile" "an explosion of a low order of magnitude"

Related terms: magnitude rate
2. [ noun ] a number assigned to the ratio of two quantities; two quantities are of the same order of magnitude if one is less than 10 times as large as the other; the number of magnitudes that the quantities differ is specified to within a power of 10
Synonyms: magnitude
Related terms: ratio
Similar spelling:   order_of_business
  order_of_payment
  order_of_the_day
  order_Moniliales