diatomicadj.

/dʌɪəˈtɒmɪk/

Etymology: < di- comb. form twice + ἄτομος atom n. + -ic suffix.

Chemistry.

Consisting of, or having, two atoms; specifically applied to compounds containing two replaceable atoms of hydrogen; sometimes used as = divalent.

ΘΚΠ

the world > matter > physics > atomic physics > [adjective] > of molecules: having two atoms

diatomic1866

the world > matter > chemistry > atomic chemistry > [adjective] > relating to molecules > by number of atoms

monatomic1848

pentatomic1858

ter-atomic1861

tetratomic1862

triatomic1862

diatomic1866

hexatomic1868

octatomic1875

heptatomic1886

monadic1907

1866 H. E. Roscoe Lessons Elem. Chem. xxxiv. 299 (heading) Diatomic acids, resulting from the oxidation of the glycols.

1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xxxix. 388 It..is monobasic but diatomic.

1869 Eng. Mech. 12 Nov. 198/3 Elements..classified as..diatomic or bivalent, having two attractions, as sulphur.

1880 E. Cleminshaw tr. C. A. Wurtz Atomic Theory 119 note The term diatomic molecules clearly and correctly expresses molecules formed of two atoms.

This entry has not yet been fully updated (first published 1895; most recently modified version published online June 2018).

单词	diatomic
释义	diatomicadj. /dʌɪəˈtɒmɪk/ Etymology: < di- comb. form twice + ἄτομος atom n. + -ic suffix. Chemistry. Consisting of, or having, two atoms; specifically applied to compounds containing two replaceable atoms of hydrogen; sometimes used as = divalent. ΘΚΠ the world > matter > physics > atomic physics > [adjective] > of molecules: having two atoms diatomic1866 the world > matter > chemistry > atomic chemistry > [adjective] > relating to molecules > by number of atoms monatomic1848 pentatomic1858 ter-atomic1861 tetratomic1862 triatomic1862 diatomic1866 hexatomic1868 octatomic1875 heptatomic1886 monadic1907 1866 H. E. Roscoe Lessons Elem. Chem. xxxiv. 299 (heading) Diatomic acids, resulting from the oxidation of the glycols. 1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xxxix. 388 It..is monobasic but diatomic. 1869 Eng. Mech. 12 Nov. 198/3 Elements..classified as..diatomic or bivalent, having two attractions, as sulphur. 1880 E. Cleminshaw tr. C. A. Wurtz Atomic Theory 119 note The term diatomic molecules clearly and correctly expresses molecules formed of two atoms. This entry has not yet been fully updated (first published 1895; most recently modified version published online June 2018). < adj.1866
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