refractile

Adjective

refractile (comparative more refractile, superlative most refractile)

1. Able to refract, refractive
   • As the colony increases, the granular character becomes more marked, until it seems to be made up of highly refractile granules, like a mass of particles of glass.1884, Various, Scientific American Supplement, No. 458, October 11, 1884
   • Stained bacilli, when examined with the polarising microscope, often show a doubly refractile cell wall (e. g., B. tuberculosis and B. anthracis).1913, John William Henry Eyre, The Elements of Bacteriological Technique