effective🔊

Having the power to produce a required effect or effects. +

Producing a decided or decisive effect. +

Efficient, serviceable, or operative, available for useful work.

Actually in effect.

(geometry, of a cycle or divisor) Having no negative coefficients.

(algebra, of a group action) Such that no group element acts trivially.

(physics) Approximate; not describing the fundamental dynamic changes in some system as they happen.

(military) A soldier fit for duty.