plural of secondary source

plural of secondary emission

plural of security hole

(law) Something that must not be removed or modified during redistribution. / (mathematics) A section that will not vary through changing state.

The part of an orchestra formed by brass instruments.

plural of secret Santa

(weaponry) squad automatic weapon, a class of light machine gun; a machine gun issued to a section of troops, being heavier than the standard assault rifle and personal machine guns issued per trooper.

(language education, grammar) A structure used to talk about improbable or impossible events in the present or future, containing an "if" clause (with a verb in the simple past) and a main clause (with would + an infinite verb).

The protection of information and information systems from unauthorized access and disruption.

(Internet) Security as it pertains to the Internet, such as information security.