(UK, Canada, Australia, law) In some common law jurisdictions, a form of delegated legislation enacted under a power derived from an act of parliament.

The area of insurance dealing with fidelity bonds. / Insurance policies of this kind.

(aviation, usually in the plural) A device that measures and displays data concerning one or more aspects of the situation of an aircraft, such as its altitude, attitude, airspeed, etc.

(aviation) An approach (pre-landing procedure) using flight instruments for some or all navigation to the landing airport and runway, as opposed to one flown solely by visual reference to the ground.

plural of instrument approach

(informal) Something is endemic, and not the result of outside influence or interference.

For a nuclear bomb, the time it takes to go from barely critical to optimally critical. It is generally much shorter for an implosion bomb than for a gun-type bomb.

plural of insertion time

An insurance product for covering unforeseen losses incurred while travelling, either internationally or domestically.

Alternative form of subinspector.