Capacity n. : The power of receiving or containing; extent of room or space; passive power; -- used in reference to physical things.

Capacity n. : The power of receiving and holding ideas, knowledge, etc.; the comprehensiveness of the mind; the receptive faculty; capability of undestanding or feeling.

Capacity n. : Ability; power pertaining to, or resulting from, the possession of strength, wealth, or talent; possibility of being or of doing.

Capacity n. : Outward condition or circumstances; occupation; profession; character; position; as, to work in the capacity of a mason or a carpenter.

Capacity n. : Legal or noral qualification, as of age, residence, character, etc., necessary for certain purposes, as for holding office, for marrying, for making contracts, will, etc.; legal power or right; competency.

Example:
What Capacity voltage converter do I need to charge mobility scooter in Europe?

Taxonomy
Capacity, free encyclopedia, subjective measure, search, free dictionary, absorb, per-unit, factor, capital, legal ability, acts, decision theory, likelihood, fuzzy logic, condenser, harmonic, company, disambiguation pages.

Defination from the web:
Capacity (economics), the point of production at which a firm or industry's average (or "per-unit") costs begin to rise, usually because some ... In decision theory, a capacity is a subjective measure of likelihood of an event, similar to a membership function in fuzzy logic. ...