[syn: limpid, lucid, luculent, pellucid, crystal clear, perspicuous]
The Collaborative International Dictionary of English v.0.48:
Pellucid \Pel*lu"cid\, a. [L. pellucidus; per (see Per-) +
   lucidus clear, bright: cf. F. pellucide.]
   Transparent; clear; limpid; translucent; not opaque.
   "Pellucid crystal." --Dr. H. More. "Pellucid streams."
   --Wordsworth.
   [1913 Webster] Pellucidity
WordNet (r) 3.0 (2006):
pellucid
    adj 1: transmitting light; able to be seen through with clarity;
           "the cold crystalline water of melted snow"; "crystal
           clear skies"; "could see the sand on the bottom of the
           limpid pool"; "lucid air"; "a pellucid brook";
           "transparent crystal" [syn: crystalline, crystal
           clear, limpid, lucid, pellucid, transparent]
    2: (of language) transparently clear; easily understandable;
       "writes in a limpid style"; "lucid directions"; "a luculent
       oration"- Robert Burton; "pellucid prose"; "a crystal clear
       explanation"; "a perspicuous argument" [syn: limpid,
       lucid, luculent, pellucid, crystal clear,
       perspicuous]
Moby Thesaurus II by Grady Ward, 1.0:
82 Moby Thesaurus words for "pellucid":
   Attic, Ciceronian, chaste, classic, clean-cut, clear,
   clear as crystal, clear as day, clear-cut, cloudless, coherent,
   connected, consistent, crisp, crystal, crystal-clear, crystalline,
   defined, definite, diaphane, diaphanous, direct, distinct, easy,
   elegant, explicit, express, filmy, finished, gauzy, gossamer,
   gossamery, graceful, gracile, light, light-pervious, lightish,
   lightsome, limpid, loud and clear, lucent, lucid, luculent,
   luminous, natural, neat, nonopaque, peekaboo, perspicuous, plain,
   polished, pure, refined, relucent, restrained, revealing, round,
   see-through, semipellucid, semitranslucent, serene, sheer, simple,
   straightforward, tasteful, terse, thin, translucent, translucid,
   transparent, transpicuous, trim, unaffected, unambiguous,
   unclouded, unconfused, unequivocal, univocal, unlabored,
   unmistakable, unobscured, well-defined