1. transparent; limpid; clear
1. The stream's water was so pellucid that I was able to see the fish swimming in it.
2. easy to understand; clear
2. Although the book deals with very difficult and obscure scientific matters, it is written in such a simple and pellucid style that any intelligent person can understand it.
per (through)#lux lucis (light) (Latin)
PEL+LUCID. LUCID. MEANS CLEAR. SO CLEAR IN MEANING.