凸轮
tū​lún

cam

凸 tū protrude

Pictograph of a bump sticking out. Opposite of 凹.

Historical Pronunciations

Old Chinese
Zhengzhangdɯːd
duːd

Sources

Character origin
漢語多功能字庫
Readings & variants
Unicode
Historical pronunciations
Zhengzhang Shangfang

轮 lún wheel Simplified

Phonosemantic compound. 车 represents the meaning and 仑 represents the sound. Simplified form of 輪.

Components

车
车 Meaning component
chē cart, vehicle
仑
仑 Sound component
lún, lùn logical reasons

Sources

Character origin
漢語多功能字庫
Readings & variants
Unicode

輪 lún wheel Traditional

Phonosemantic compound. 車 represents the meaning and 侖 represents the sound.

Components

車
車 Meaning component
chē cart, vehicle
侖
侖 Sound component
arrange

Character Evolution

Bronze form
Bronze Late Shang ~1100 BC
Bronze form
Bronze Late Shang ~1100 BC
Seal form
Seal Warring States (Chu) 475-221 BC
Seal form
Seal Warring States (Chu) 475-221 BC
Seal form
Seal Warring States (Chu) 475-221 BC
Seal form
Seal Shuowen ~100 AD
Clerical form
Clerical Qin 221-206 BC
Clerical form
Clerical Western Han 202 BC-9 AD
Clerical form
Clerical Eastern Han 25-220 AD
Clerical form
Clerical Eastern Han 25-220 AD
Regular Modern

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-Sagartlwin[r]u[n] wheel

說文解字

《說文》：“輪，有輻曰輪，無輻曰輇。从車，侖聲。”

Sources

Character origin
漢語多功能字庫
Readings & variants
Unicode
Historical pronunciations
Baxter-Sagart
Historical images
Academia Sinica
Etymology
Shuowen Jiezi (說文解字)