1. the great size or extent of something; importance or significance
2. a numerical quantity or value, especially in mathematics or science
Usage: mathematics; science
3. the degree of brightness of a star as seen from Earth
Usage: astronomy

Examples

• The magnitudes of the earthquake’s effects were felt across the entire region.
• Scientists measured the magnitudes of the forces acting on the bridge.
• The magnitudes of these numbers are too large to calculate by hand.
• Astronomers compare the magnitudes of different stars to study their brightness.
• The magnitudes of the problems facing the city require immediate attention.
• We need to consider the magnitudes of all variables in this equation.