sodionn.
/səʊˈdʌɪən/, /ˈsəʊdɪən/, U.S. /ˌsoʊˈdaɪən/, /ˈsoʊdiˌɑn/ Chemistry. Now rare.
The sodium ion, Na+.In quot. 1841 apparently: a sodium radical.
ΚΠ
1841 Amer. Repertory Arts, Sci., & Manuf. Feb. 64 Potassium, sodium, &c. I regard as compounds of potassion and sodion, with different proportions of hydrogen.
1901 J. Walker in Chem. News 4 Oct. 162/1 A basis for such a nomenclature was supplied by Faraday, who used the termination ion in conjunction with the stems of the ordinary chemical names... The proposals which I make for naming the positive and negative radicals of salts, acids, and bases considered as ions are as follows... Hydrion..Sodion... Hydroxidion..Sulphidion [etc.].
1917 S. Sloan Electro-therapy Gynæcol. ii. 14 These sodions will thus become de-ionised: the metal sodium being set free.
1935 Proc. Royal Soc. A. 150 62 A plot of log emission against the reciprocal of temperature indicates a thermionic work function for very dilute films of sodions of 2·5 volts.
This is a new entry (OED Third Edition, March 2012; most recently modified version published online March 2022).
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n.1841- well-plucked
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- well-plucked one
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