= S =
salt substrate n.
[MIT] Collective noun used to refer to
potato chips, pretzels, saltines, or any other form of snack food
designed primarily as a carrier for sodium chloride. Also
`sodium substrate'. From the technical term `chip substrate',
used to refer to the silicon on the top of which the active parts
of integrated circuits are deposited.
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.