On this Wikipedia the language jiffy buttermilk biscuit mix are at the top of the page across from the article title. Jiffy can be an informal term for any unspecified short period, as in “I will be back in a jiffy”.

From this, it has acquired a number of more precise applications as the name of multiple units of measurement, each used to express or measure very brief durations of time. 50 of a second in most mains power supplies. In computing, a jiffy was originally the time between two ticks of the system timer interrupt. It is not an absolute time interval unit, since its duration depends on the clock interrupt frequency of the particular hardware platform.

94 Hz with NTSC systems, or 50. The Town and Country Magazine, vol. A Dictionary of Units of Measurement. Look up jiffy in Wiktionary, the free dictionary. To save this word, you’ll need to log in.