Definitions

yāo (adjective) youngest; most junior
yāo (adjective) tiny
yāo (number) one

Etymology

Pictograph of a twisted thread.

About

The character is an ancient pictograph of a twisted thread, a depiction that immediately evokes something tiny, delicate, or insignificant. From this image, it acquired its fundamental sense of extreme smallness. As a radical, it forms part of many characters related to smallness, silk, or subtlety. It also came to be used as the vocal representation of the number one in dice games, dominoes, telephone numbers, and military communication, where a distinct pronunciation avoids confusion with similar-sounding numerals. Its solitary, thread-like shape visually underscores the idea of the smallest possible entity.

Etymology Hide

Bronze etymology image
Bronze Early Western Zhou (~1000 BC)
Seal etymology image
Seal Mid Western Zhou (~900 BC)
Bronze etymology image
Bronze Late Spring and Autumn (~500 BC)
Bronze etymology image
Bronze Late Spring and Autumn (~500 BC)
Bronze etymology image
Bronze Early Warring States (~400 BC)
Seal etymology image
Seal Shuowen (~100 AD)
Traditional Modern
Simplified Modern