Sulfide - Nomenclature. 1  The systematic names sulfanediide and sulfide (2â), valid IUPAC names, are determined according to the substitutive and additive nomenclatures, respectively.
Nuclear proliferation is the spread of nuclear weapons, fissionable material, and weapons-applicable nuclear technology and information to nations not recognized as Nuclear Weapon States by the Treaty on the Non-Proliferation of Nuclear Weapons, also known as the Nuclear Non-Proliferation Treaty or NPT.
Proliferation Security Initiative, an international effort to interdict transfer of banned weapons and weapons technology; Public Sector Information, as in: The European Union Directive on the re-use of public sector information (PSI directive), adopted in November 2003