The meaning of MAGNITUDE is great size or extent. How to use magnitude in a sentence.

A star’s brightness measured as either absolute magnitude or apparent magnitude. The latter states brightness in the sky on a scale from -26.8 (the Sun, brightest) to +25 (the faintest).

Magnitude is also a measure of the brightness of a star as it appears from earth.

[uncountable] (formal) the great size or importance of something; the degree to which something is large or important. We did not realize the magnitude of the problem. They appear to underestimate the …

In math, magnitude compares numbers by powers of 10. If your weekly allowance was $10, but your brother's was $100, his allowance would be one order of magnitude higher than yours.

Magnitude is used in stating the size or extent of something such as a star, earthquake, or explosion.

Illustrated definition of Magnitude: The size of something. The magnitude of a number (also called its absolute value) is its distance from...