magnitude
n. uncountablen. the great size, importance, or power of something. It is often used when talking about how big a problem is or how strong an earthquake is.
n. the great size or extent of something; the degree of brightness of a star or the amount of energy released by an earthquake. Often used to emphasize the scale of abstract concepts like importance or impact.
We did not realize the magnitude of the problem at first.
The government struggled to respond effectively because they underestimated the magnitude of the economic crisis.
Astronomers categorize stars by their apparent magnitude, a scale that measures brightness as seen from Earth rather than the actual physical size or total energy output of the celestial body.
From Latin magnitūdō (“greatness, size”), magnus + -tūdō.
Often used in the phrase 'of such magnitude' or followed by 'of' to describe the scale of a noun.