Entry 1 sense Webster, 1913 Refringent /(-jent)/ · Re·frin·gent · IPA 01 a. Pertaining to, or possessing, refringency; refractive; refracting; as, a refringent prism of spar. 1. Pertaining to, or possessing, refringency; refractive; refracting; as, a refringent prism of spar.