c. 1300, from Anglo-French diminuciun, Old French diminucion, from Latin diminutionem (nominative diminutio), earlier deminutionem, noun of action from past participle stem of deminuere (see diminish).
1. the diminution of political power
2. Age brought a gradual diminution of his strength and energy.
3. They hope for a small diminution in taxes.
4. He experienced no diminution of his physical strength.
5. The president has accepted a diminution of the powers he originally wanted.