sd

/S D/
noun
  1. 1

    (law enforcement) Initialism of sheriff's department.

  2. 2

    Initialism of self-destruct.

noun
  1. 1

    A governmental district that operates local public primary and secondary schools.

noun
  1. 1

    A system that uses a resolution that is not considered to be either high-definition television (720p, 1080i, 1080p, 1440p, 4K UHDTV, and 8K UHD) or enhanced-definition television (EDTV 480p).

Synonyms

noun
  1. 1

    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 ฯƒ.

Source: https://en.wiktionary.org/wiki/SD, https://en.wiktionary.org/wiki/school%20district, https://en.wiktionary.org/wiki/sd, https://en.wiktionary.org/wiki/standard%20definition, https://en.wiktionary.org/wiki/standard%20deviation