| SPA | the gap between two high-potential terminals |
|---|---|
| SPA | a component of an ignition system |
| SPA | (on early automobiles) a lever mounted on the steering column and used to adjust the timing of the ignition |
| SPA | put in motion or move to act |
| SPA | electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark |
| SPA | an early radio transmitter using a discharge across a spark gap as the source of its power |
| SPA | a wire net to stop sparks from an open fireplace or smokestack |
| SPA | electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark |
| SPA | the quality of glittering or sparkling brightly |
| SPA | brightness and animation of countenance |
| SPA | the occurrence of a small flash or spark |
| SPA | be lively or brilliant or exhibit virtuosity |