† tithonismn.

Origin: Formed within English, by derivation. Etymons: tithonic adj., -ism suffix.

Etymology: < tithon- (in tithonic adj.) + -ism suffix. Compare earlier tithonize v. and tithonicity n.

Photography. Obsolete. rare.

The property by which solar radiation causes photochemical change, as in traditional photography; = tithonicity n. Cf. actinism n. 1.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > solar radiation > [noun] > property causing chemical change

tithonicity1842

actinism1845

tithonism1855

1855 J. Scoffern in Orr's Circle Sci.: Elem. Chem. 93 That peculiar associate of light which has been termed by different chemists actinism, tithonism, and energia.

This entry has been updated (OED Third Edition, January 2018; most recently modified version published online June 2018).

单词	tithonism
释义	† tithonismn. Origin: Formed within English, by derivation. Etymons: tithonic adj., -ism suffix. Etymology: < tithon- (in tithonic adj.) + -ism suffix. Compare earlier tithonize v. and tithonicity n. Photography. Obsolete. rare. The property by which solar radiation causes photochemical change, as in traditional photography; = tithonicity n. Cf. actinism n. 1. ΘΚΠ the world > matter > physics > electromagnetic radiation > solar radiation > [noun] > property causing chemical change tithonicity1842 actinism1845 tithonism1855 1855 J. Scoffern in Orr's Circle Sci.: Elem. Chem. 93 That peculiar associate of light which has been termed by different chemists actinism, tithonism, and energia. This entry has been updated (OED Third Edition, January 2018; most recently modified version published online June 2018). < n.1855
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