The definition of ability is having the ability to do something.(noun)
An example of ability is having enough money to pay a bill.
Ability means a special talent or skill.(noun)
An example of ability is a batting average of .500 in baseball.
See ability in Webster's New World College Dictionary
noun pl. abilities
Origin: ME abilite < MFr habilité < L habilitas < habilis: see able
Origin: L -abilitas: see -able & -ity
See ability in American Heritage Dictionary 4
noun pl. a·bil·i·ties
Origin: Middle English abilite
Origin: , from Old French habilite
Origin: , from Latin habilitās
Origin: , from habilis, handy; see able.
Origin: Middle English -abilitie
Origin: , from Old French -abilite
Origin: , from Latin -ābilitās
Origin: , from -ābilis, -able.
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