Adjective
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 cristal"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"