lámpara termiónica

f.

thermionic valve.

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(n.) = thermionic tube

Ex. A spider web of metal, sealed in a thin glass container, a wire heated to brilliant glow, in short, the thermionic tube of radio sets is made by the hundred million, tossed about in packages, plugged into sockets -- and it works!.

* * *

(n.) = thermionic tube

Ex: A spider web of metal, sealed in a thin glass container, a wire heated to brilliant glow, in short, the thermionic tube of radio sets is made by the hundred million, tossed about in packages, plugged into sockets -- and it works!.