A burglar alarm that makes no noise that is audible to the trespasser.

An attachment to a gun or an exhaust pipe that reduces the sound it emits / The muffler of an internal combustion engine. / Any of various devices to silence the humming noise of telegraph wires

In every bad situation there is an element of good.

(physics, astronomy) the nucleosynthesis process, in stars where temperatures exceed 3x10⁹K, in which silicon undergoes photodisintegration to form fragments which in turn produce elements of atomic number up to 60, peaking at iron

An extremely fine, rare and valuable fabric produced from the long silky filaments or byssus excreted by several molluscs (particularly Pinna nobilis, rough penshell) by which they attach themselves to the sea bed.

(chemistry) Any hydride of silicon; a silane.

plural of silver fox

(physics, astronomy) a radiation detector used in astrophysics, nuclear physics, imaging and X-ray spectroscopy

(medicine) A disease of the lungs caused by the inhalation of crystalline silica dust.

A technology-rich area of South Wales.