breakdown

A failure, particularly one which is mechanical in nature.

The sudden (and usually damaging) transition of an electrical insulator to a conductor when subjected to a sufficiently strong voltage, caused by the partial or complete ionization of the insulator; (countable) an instance of this; also, the minimum voltage at which this occurs.

Something, such as a vehicle, that has experienced a mechanical failure.

Detailed categorization, or itemization or listing, of the components of a thing; (countable) an instance of this.

Breaking of chemical bonds within a compound to produce simpler compounds or elements; (countable) an instance of this.

A detailed description of a forthcoming project or screenplay which identifies all the required elements, such as the cast, costumes, equipment, props, and special effects.

A failure in a relationship; a failure or loss of organization in a system.

(Sudden) worsening of physical health or (more commonly) mental stability, resulting in an inability to carry on normal activities; (countable) an instance of this.

Injury to a horse's leg causing lameness; (countable) an instance of this.

The short period of open play immediately after a tackle and before and during the ensuing ruck.