octoden.

Brit.

/ˈɒktəʊd/, U.S.

/ˈɑkˌtoʊd/

Origin: Formed within English, by compounding. Etymons: octo- comb. form, -ode comb. form².

Etymology: < octo- comb. form + -ode comb. form². Compare earlier diode n.

Electronics.

A thermionic valve with eight electrodes, used esp. as a frequency changer in a superheterodyne receiver. Now rare.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > thermionic valve > [noun] > vacuum tube or thermionic valve

vacuum tube1859

trigger tube1894

audion1906

pliotron1915

diode1919

electron tube1919

negatron1919

pentode1919

power valve1919

tetrode1919

triode valve1919

magnetron1921

bright emitter1923

peanut valve1923

peanut1924

power tube1924

multiple valve1929

thyratron1929

heptode1932

hexode1933

pentagrid1933

acorn tube1934

octode1934

triode-pentode1936

triode-hexode1937

transitron1939

trochotron1947

steering diode1957

1934 A. W. Haslett Radio Round World 191 There are many more complicated types of valve, ranging up to the octode which has eight different components instead of only three.

1961 Amateur Radio Handbk. (ed. 3) ii. 58/2 When provided with an additional grid used as a suppressor it [sc. the heptode] was referred to as an octode.

2000 C. E. Miller Valve Radio & Audio Repair Handbk. (ed. 2) xi. 61/2 Another valve..is the octode, in which an extra grid (G6) is placed between G5 and anode, where it acts like the suppressor grid in a pentode.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	octode
释义	octoden. Brit. /ˈɒktəʊd/, U.S. /ˈɑkˌtoʊd/ Origin: Formed within English, by compounding. Etymons: octo- comb. form, -ode comb. form². Etymology: < octo- comb. form + -ode comb. form². Compare earlier diode n. Electronics. A thermionic valve with eight electrodes, used esp. as a frequency changer in a superheterodyne receiver. Now rare. ΘΚΠ the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > thermionic valve > [noun] > vacuum tube or thermionic valve vacuum tube1859 trigger tube1894 audion1906 pliotron1915 diode1919 electron tube1919 negatron1919 pentode1919 power valve1919 tetrode1919 triode valve1919 magnetron1921 bright emitter1923 peanut valve1923 peanut1924 power tube1924 multiple valve1929 thyratron1929 heptode1932 hexode1933 pentagrid1933 acorn tube1934 octode1934 triode-pentode1936 triode-hexode1937 transitron1939 trochotron1947 steering diode1957 1934 A. W. Haslett Radio Round World 191 There are many more complicated types of valve, ranging up to the octode which has eight different components instead of only three. 1961 Amateur Radio Handbk. (ed. 3) ii. 58/2 When provided with an additional grid used as a suppressor it [sc. the heptode] was referred to as an octode. 2000 C. E. Miller Valve Radio & Audio Repair Handbk. (ed. 2) xi. 61/2 Another valve..is the octode, in which an extra grid (G6) is placed between G5 and anode, where it acts like the suppressor grid in a pentode. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). < n.1934
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