irrefrangible

[ ir-i-fran-juh-buh l ]
/ ˌɪr ɪˈfræn dʒə bəl /

adjective

not to be broken or violated; inviolable: an irrefrangible rule of etiquette.
incapable of being refracted.

Origin of irrefrangible

First recorded in 1710–20; ir-2 + refrangible

OTHER WORDS FROM irrefrangible

ir·re·fran·gi·bil·i·ty, ir·re·fran·gi·ble·ness, noun ir·re·fran·gi·bly, adverb

British Dictionary definitions for irrefrangible

irrefrangible
/ (ˌɪrɪˈfrændʒəbəl) /

adjective

not to be broken or transgressed; inviolable
physics incapable of being refracted

Derived forms of irrefrangible

irrefrangibility or irrefrangibleness, noun irrefrangibly, adverb