___
___ 原 [plain]
is in  ___
On-reading: ゲン as in 原子 genshi ___
Original meaning: uncultivated field | wilderness → in its original state
GEN hara  
野原 nohara field  
hara Hara  
平原 heigen plain | prairie 平 [flat] 
高原 kōgen plateau  
起原 kigen origin | source 起 [rise] 
原因 gen'in cause | origin  
原則 gensoku principle  
原書 gensho original text 書 [write] 
原油 gen'yu crude oil  
原子 genshi atom