pel·lu·cid 
(pə-lsĭd)
(pə-lsĭd)adj.
1. Admitting the passage of light; transparent or translucent. See Synonyms at clear.
2. Transparently clear in style or meaning: pellucid prose.
[Latin pellūcidus, from pellūcēre, to shine through : per-, through; see PER- + lūcēre, to shine; see leuk- in the Appendix of Indo-European roots.]
pel·lu·cidi·ty, pel·lucid·ness n.
pel·lucid·ly adv.