acorn tube
acorn tube · acorn tubes
A kind of vacuum tube with a glass cap at one endA kind of vacuum tube with a glass cap at one end.
Meaning
1 senses(historical)A kind of vacuum tube with a glass cap at one end.
a small vacuum tube; used at high frequencies
Origin
From the resemblance of the glass cap to the cup of an acorn.From the resemblance of the glass cap to the cup of an acorn.
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Forms
plural: acorn tubes| Singular | acorn tube |
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| Plural | acorn tubes |
regular