The SI unit of time, see second.
The arcsecond, a unit of plane angle.
In Bern, Switzerland, a unit of length, = ¹⁄₁₀th of a line.
In Prussia and some other German-speaking areas, before 1870, = ¹⁄₁₀th Primen (or Prinen) = ¹⁄₁₀₀th Lachterzoll. There were 8000 Sekunden in a Lachter.
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Last revised: 22 November 2020.