mag ‧ ni ‧ tude /ˈmæɡnətjuːd, ˈmæɡnɪtjuːd $ -tuːd/ BrE AmE noun
[ Date: 1300-1400 ; Language: Latin ; Origin: magnitudo , from magnus 'great' ]
1 . [uncountable] the great size or importance of something
magnitude of
They didn’t seem to appreciate the magnitude of the problem.
of such/this/similar etc magnitude
We did not think the cuts would be of this magnitude.
an increase of this order of magnitude (=size)
2 . [countable] technical the degree of brightness of a star
3 . [countable] technical the force of an ↑ earthquake