Intensely focused and concentrated on purpose, thinking of only one goal, undistractable.

In a single-minded manner.

(electrical engineering) The abnormal operation of a three-phase machine when its supply is changed by accidental opening of one conductor.

present participle of single-phase

The property of being single-minded.

(of a jacket or coat) Closing with a single row of buttons that form a narrow overlap.

A charge added to a per-person occupancy rate that is based on an assumption of double occupancy, as on a cruise ship.

A music single with more than two tracks, i.e. not just an A-side and a B-side.

plural of single star system

(astronomy) A star system consisting of a solitary star not gravitationally bound to other stars