Tidal energy.

(mathematics) A mathematical relationship in which the magnitude of something is proportional to a fixed power of the magnitude of something else (i.e. the relationship takes the form f(x) = a.xᵏ).

(idiomatic) Limited ability.

(electrical, engineering) The ratio of the actual power to the apparent power in an alternating current power system; specifically, the cosine of the phase angle between the voltage and the current.

plural of power broker

A person or group having the ability to influence important decisions, especially in public policy, politics, and business.

(physics) Power of the wind. / Such power harnessed as a power source, especially as applied to a category of electrical generation.

(chiefly UK, Canada, Australia, idiomatic) The collective political, economic, and social influence of senior citizens, especially when they are mobilized by a common interest.

The corrupting influence of power is total when one's power is total.

(algebra) An algebra such that every subalgebra generated by one element is associative.