(finance, business) The value of additional optional investment opportunities available only after having made an initial investment. / Quality or state in which choice or discretion is allowed.

(US, military, aviation) An aircraft that may be manned or unmanned, able to function in either mode without modification.

plural of optionally piloted vehicle

plural of European option

plural of American option

plural of Bermudan option

(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.

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

(graphical user interface) A radio button.