firebottle: n.obs. A large, primitive, power-hungry active
electrical device, similar in function to a FET but constructed out
of glass, metal, and vacuum. Characterized by high cost, low
density, low reliability, high-temperature operation, and high power
dissipation. Sometimes mistakenly called a `tube' in the U.S. or a
`valve' in England; another hackish term is glassfet.
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