One who opts, or makes a choice.

A person who lives in a region undergoing a change of sovereignty and thus may choose between retaining their old citizenship or opting for the citizenship of the new sovereignty.

(game theory, economics) Describing a situation in which the profit of one party cannot be increased without reducing the profit of another.

(physics) The transmission of light through metallic films perforated by nanohole arrays at optical frequencies

(finance) An option that can be exercised only at expiry date.

(finance) An option that can be exercised at specific dates between issue date and expiry date. Sometimes known as a mid-Atlantic option.

(finance) an option that can be exercised at any date between the issue date and the expiry date.

(obsolete) To choose; to wish for; to desire.

Alternative spelling of cooption

Alternative spelling of cooptation