Adjective
1. (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"2. having a clear mind;
"a lucid moment in his madness"3. capable of thinking and expressing yourself in a clear and consistent manner;
"a lucid thinker""she was more coherent than she had been just after the accident"4. 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"