(US, military, nautical) Sub-surface ballistic nuclear: a nuclear-powered submarine carrying and launching ballistic missiles armed with nuclear weapons

(US, Navy) Initialism of Subsurface guided.: a diesel-powered submarine carrying guided missiles / (US, Army) Abbreviation of staff sergeant.

plural of SSBN

plural of SSG

plural of SSGN

The Ssese Islands

Initialism of School of Slavonic and East European Studies.

(electronics, countable) Initialism of solid-state disk. / (electronics, countable) Initialism of solid-state drive. / (security, software, uncountable) Initialism of static separation of duty.

(aviation) Initialism of supersonic transport. / (biochemistry) Abbreviation of somatostatin. / (meteorology) Initialism of sea surface temperature.

(computing) Initialism of Shiva Smart Tunneling. / (space science, US, NASA) Initialism of Spitzer Space Telescope.