1. to make a gap, disparity, or distance between two things smaller or less significant
The new policy aims to reduce the difference between rich and poor communities.
A nova política visa reduzir a diferença entre comunidades ricas e pobres.
2. to decrease the extent or magnitude of a discrepancy or variance
We need to reduce the difference in salary between departments.
Precisamos reduzir a diferença de salário entre departamentos.