(mathematics) A partially ordered set. / (mathematics) A totally ordered set.

(finance) An instruction to carry out a trade only if the asset to be traded reaches a certain price during the current trading day.

plural of day order

plural of train order

(rail transport, US, Canada) Formerly, a telegraphed or written instruction issued by a dispatcher to train crews and other railroad employees, concerning changes in operation of a particular train.

(finance) An order to buy a security at no more than, or sell at no less than, a specified price, thus not performing the transaction at all if this price is not available.

plural of limit order

plural of order of symmetry

(informal, humorous) Dismissal.

Synonym of restraining order / An injunction. / An order restricting or setting terms for disclosure or discovery.