SLS

Initialism of Space Launch System.

Proper noun

  1. Initialism of Space Launch System.
  2. Initialism of Space Launcher System.

Noun

  1. Initialism of second-level support.
  2. Initialism of sodium lauryl sulphate.
  3. Initialism of single-leg squat.
  4. Initialism of shit life syndrome.
  5. Initialism of spider lamb syndrome.