SD

Initialism of South Dakota: a state of the United States.

Proper noun

  1. Initialism of South Dakota: a state of the United States.
  2. Initialism of Secure Digital: a non-volatile memory card format developed for use in portable devices.
    • I had responsibility for safely extracting SD cards and manually uploading footage onto the server. - 2023, Martin MacInnes, In Ascension, Atlantic Books, page 44:

Derived

microSD miniSD SDHC SDIO SDXC

Noun abbreviation, alt of

  1. Initialism of school district.
  2. Initialism of sheriff's department.
  3. Initialism of standard deviation.
  4. Initialism of self-destruct.
  5. Initialism of segmental duplication.
    • We estimated that the following percentage of elements were correctly assembled: 95.4% of alpha satellites; 91.5% of human satellites 2 and 3; 97.7% of segmental duplications (SDs); 94.3% of variable number tandem...
  6. Initialism of sugar daddy

    Coordinate Terms: SB

Forms

SDs

Noun broadcasting, media

  1. Initialism of standard definition (“typically 640×480 pixels”).

    Coordinate Terms: HD