pellucid UK /pɪˈl(j)uːsɪd/US /pəˈlusɪd/adjective 5noun 1forms 3 adjective5 •(literary) Allowing the passage of light; translucent or transparent.The sea was shining like a sheet of glass, […] and the bright sea-weeds and the brilliant corals shone in the depths of that pellucid water, as we rowed over it, like rare and precious gems. — 1857 •(literary, figurative) Easily understood; clear.Written in spare, pellucid prose, the book reads like a close-to-the-bone memoir. — 1994 •(literary, figurative) Of music or some other sound: not discordant or harsh; clear and pure-sounding.Opera star [Giorgio] Tozzi sings with the richness of burnished bronze and [Sharon] Daniels complements him with her pellucid soprano. — 1979 •(literary, figurative) Of a person, their mind, etc.: able to think and understand clearly; not confused; clear, sharp. •(figurative, no longer used) Easily recognized or seen through; apparent, obvious. noun1 •(no longer used, rare) Something which allows the passage of light; a translucent or transparent object.The true Astroites, vvhich in the sun-shine throvvs out a brisk light radiating from one certain point, belongs to the class of Pellucids. — 1735 formspellucids · more pellucid · most pellucid