pent|ode

pent|ode
pent|ode «PEHN tohd», noun.
1. the vacuum tube formerly most commonly used for amplification in radio and television sets, so called because it has five electrodes: »

Three-grid tubes, or pentodes, are capable of greater amplification than triodes (Roy F. Allison).

2. a high-power transistor used for the same purpose, having four wires: »

The pentode transistor, now being perfected, has four cat whiskers and can replace three triode transistors for some applications (Newsweek).

╂[< pent- + (electr)ode]

Useful english dictionary. 2012.

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  • pent- — pent(a) ♦ Élément, du gr. pente « cinq ». pent(a) élément, du grec pente, cinq . ⇒PENT(A) , PENT(É) , (PENT , PENTA , PENTÉ )élém. formant Élém. tiré du gr. «cinq …   Encyclopédie Universelle

  • penta- — pent(a) ♦ Élément, du gr. pente « cinq ». pent(a) élément, du grec pente, cinq . ⇒PENT(A) , PENT(É) , (PENT , PENTA , PENTÉ )élém. formant Élém. tiré du gr. «cinq …   Encyclopédie Universelle

  • penté- — ⇒PENT(A) , PENT(É) , (PENT , PENTA , PENTÉ )élém. formant Élém. tiré du gr. «cinq», servant à constr. des subst. et adj., surtout dans le domaine sc. et plus partic. en chim. I. [L élém. signifie «(composé de) cinq parties; (possédant) cinq… …   Encyclopédie Universelle

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