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Occupational Disease: An illness resulting from long-term employment in a particular type of work, such as those employees exposed to asbestos, who later develop cancer.

Opinion: An explanation written by the judge explaining his decision.

Ordinance: A law passed by a local or municipal government.

Original Jurisdiction: The first court to which a legal dispute is referred.

Outside Air Temperature: The temperature just outside the aircraft.

Override: To alter selection made automatically by software contained in the aircraft.

Overrule: In a trial, to overrule means to reject an objection.