RhymeZone: sso definitions

Definitions of SSO:

noun: Initialism of single sign-on.
noun: Initialism of shared services organization.
noun: Initialism of sub-stellar object.
noun: Initialism of sun-synchronous orbit. [(astrodynamics) A nearly polar orbit in which a satellite passes over the surface of a planet maintaining the same local mean solar time.]

(Definitions from Wiktionary)