aclasticadj.

Brit.

/eɪˈklastɪk/,

/əˈklastɪk/, U.S.

/eɪˈklæstɪk/

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ἄκλαστος , -ic suffix.

Etymology: < ancient Greek ἄκλαστος unbroken ( < ἀ- a- prefix⁶ + κλαστός broken: see clastic adj.) + -ic suffix. Compare earlier anaclastic adj. 2, and also diaclastic adj. at diaclasis n. Derivatives.

Physics. rare.

Of a substance: transparent but not refracting light that passes through it; not refractive.

ΚΠ

1878 New Sydenham Soc. Lexicon Aclastic, applied to substances which permit the passage of rays of light without refracting them.

1911 Cassell's Cycl. Photogr. 7/1 Aclastic, not capable of refracting, or bending, light.

This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021).

单词	aclastic
释义	aclasticadj. Brit. /eɪˈklastɪk/, /əˈklastɪk/, U.S. /eɪˈklæstɪk/ Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ἄκλαστος , -ic suffix. Etymology: < ancient Greek ἄκλαστος unbroken ( < ἀ- a- prefix⁶ + κλαστός broken: see clastic adj.) + -ic suffix. Compare earlier anaclastic adj. 2, and also diaclastic adj. at diaclasis n. Derivatives. Physics. rare. Of a substance: transparent but not refracting light that passes through it; not refractive. ΚΠ 1878 New Sydenham Soc. Lexicon Aclastic, applied to substances which permit the passage of rays of light without refracting them. 1911 Cassell's Cycl. Photogr. 7/1 Aclastic, not capable of refracting, or bending, light. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021). < adj.1878
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