diathermacyn.

Etymology: < French diathermasie (Melloni, 1841), < Greek διαθερμασία a warming through, < διά through + θερμασία heat. This English form, which would regularly have been diathermasy , is conformed to words in -acy suffix.Previous versions of the OED give the stress as: diaˈthermacy.

The quality of being diathermic; = diathermancy n. 2.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > heat > transmission of heat > [noun] > perviousness

diathermaneity1835

diathermancy1837

transcalescence1850

diathermanism1858

diathermacy1867

transcalency-

1867 W. A. Miller Elements Chem. (ed. 4) i. 296 Scarcely superior to pure water in diathermacy.

1870 M. Williams Fuel of Sun §113 Any degree of diathermacy permitting radiation to take place..across the flame.

1877 H. Watts Dict. Chem. V. 61 Bodies which..afford a more or less free passage to rays of heat, are called by Melloni diathermic; while those which..entirely obstruct the passage of radiant heat, are called adiathermic; the corresponding properties..being called diathermacy and adiathermacy, sometimes also diathermaneity and adiathermaneity.

This entry has not yet been fully updated (first published 1895; most recently modified version published online June 2019).

单词	diathermacy
释义	diathermacyn. Etymology: < French diathermasie (Melloni, 1841), < Greek διαθερμασία a warming through, < διά through + θερμασία heat. This English form, which would regularly have been diathermasy , is conformed to words in -acy suffix.Previous versions of the OED give the stress as: diaˈthermacy. The quality of being diathermic; = diathermancy n. 2. ΘΚΠ the world > matter > physics > electromagnetic radiation > heat > transmission of heat > [noun] > perviousness diathermaneity1835 diathermancy1837 transcalescence1850 diathermanism1858 diathermacy1867 transcalency- 1867 W. A. Miller Elements Chem. (ed. 4) i. 296 Scarcely superior to pure water in diathermacy. 1870 M. Williams Fuel of Sun §113 Any degree of diathermacy permitting radiation to take place..across the flame. 1877 H. Watts Dict. Chem. V. 61 Bodies which..afford a more or less free passage to rays of heat, are called by Melloni diathermic; while those which..entirely obstruct the passage of radiant heat, are called adiathermic; the corresponding properties..being called diathermacy and adiathermacy, sometimes also diathermaneity and adiathermaneity. This entry has not yet been fully updated (first published 1895; most recently modified version published online June 2019). < n.1867
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