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二極真空管 (nikyokushinkuukan) Japanese meaning: diode | Kotomora

二に極きょく真しん空くう管かん

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Meanings

1

Technical term for a two-electrode vacuum tube; in modern contexts often refers to a semiconductor diode as well, but the kanji specifically indicates a vacuum tube diode.

初しょ期きのラジオ受じゅ信しん機きには二に極きょく真しん空くう管かん

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Early radio receivers used vacuum tube diodes.

Kanji

二two, two radical (no. 7)
極extreme, pole, extremely
真true, reality, Buddhist sect
空empty, sky, void
管pipe, tube, wind instrument

Related words

ダイオード
ダイオード is the common loanword for semiconductor diodes, while 二極真空管 specifically refers to a vacuum tube diode and is more technical/historical.

Built from

二に極きょく+真しん空くう管かん

Etymology

Compound of 二極 (two electrodes) and 真空管 (vacuum tube). The term directly describes the device's structure.