(statistics) A measure of how spread out data values are around the mean, defined as the square root of the variance. Represented with the Greek letter σ (sigma).

(UK slang, derogatory) Utterly basic, ordinary, or standard; unremarkable, unexceptional, etc.

The situation where two groups or individuals are the same in pertinent ways, but one is condemned for it while the other is excused.

The official language of the People's Republic of China and the Republic of China, based on the Beijing dialect of Mandarin and accepted as a lingua franca for Han communities worldwide.

Alternative spelling of substandard

Alternative spelling of nonstandard

plural of standard-bearer

(astronomy) Any astronomical object of known absolute magnitude. Its distance can then be calculated from its apparent magnitude.

Time as measured by synchronizing clocks in different geographical locations within a time zone to the same time, rather than using the local meridian, as in local mean time or solar time.

An agreed method of measuring time; a specification or standard of either the rate at which time passes, or of points in time, or of both.