The process of making something optional.

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

(graphical user interface) A radio button.

(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.

Alternative spelling of cooption

plural of Bermudan option

plural of American option

plural of European option

plural of co-option