yuán
circle
Phonosemantic compound. 囗 represents the meaning and 員 represents the sound. Originally written as 員.
Evolution

Seal script
Chu (Warring States: 475-221 BC)
Seal script
Shuowen (~100 AD)Regular script
ModernDefinitions
Component uses
Sound component in 1 character (1 verified)
Remnant component in 1 character (1 verified)
Sources