deflexibleadj.

/dɪˈflɛksɪb(ə)l/Etymology: < Latin dēflexus (see deflex adj.) + -ble suffix.
the world > matter > physics > electromagnetic radiation > light > diffraction > [adjective] > capable of deflection
1796 H. Brougham in (Royal Soc.) 86 234 It is evident that the most inflexible rays are also most deflexible.
This entry has not yet been fully updated (first published 1894; most recently modified version published online March 2018).