Order-of-magnitude Definition

orders-of-magnitude
noun
An estimate of size or magnitude expressed as a power of ten.
Earth's mass is of the order of magnitude of 1022 tons; that of the sun is 1027 tons.
American Heritage
Any of a series of numbers or quantities each of which is the result of adding a unit to its predecessor's exponent while keeping the same base number, as in scientific notation: in base ten, 10 (101), 100 (102), 1,000 (103), etc. represent consecutive orders of magnitude.
Webster's New World
A range of values between a designated lower value and an upper value ten times as large.
The masses of Earth and the sun differ by five orders of magnitude.
American Heritage
Any significant increase or decrease in quantity, value, degree, etc.
Webster's New World
Synonyms:
magnitudeorder

Other Word Forms of Order-of-magnitude

Noun

Singular:
order-of-magnitude
Plural:
orders-of-magnitude
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