yì
hundred million
Original meaning:
quiet; at rest
Phonosemantic compound. 亻 represents the meaning and 乙 represents the sound. Simplified form of 億. Based on the original meaning "quiet; at rest". The current meaning is a phonetic loan.
Evolution

Bronze script
Early Warring States (~400 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Traditional script
ModernSimplified script
ModernMost common words with 亿
Freq. | Word | Meaning |
---|---|---|
several billion | ||
100 million | ||
countless | ||
millions and millions | ||
giga- |
Sources