(business, often attributive) A business practice in which a customer agrees to have goods or services provided automatically, and must either continue to pay for the service or specifically decline before being rebilled.

Alternative form of nonoptional.

(finance) An option to buy a stated quantity of an asset or financial product, such as stock, at a stated price (the strike price), on a stated future date (or range of dates); contrasted with put option.

(finance) An option to sell a stated quantity of an asset or financial product, such as stock, at a stated price (the strike price), on a stated future date (or range of dates); contrasted with call option.

An action (or series of actions) that, when performed, automatically selects a preferred outcome of several possible outcomes, depending on the actions of other actors.

(finance) A put option that makes a payoff in the event the issuer of a specified reference asset defaults.

plural of credit default option

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

plural of optionally piloted vehicle

(idiomatic) To not commit to a decision, to keep various options available.