膝跳
xī​tiào

knee-jerk

膝 xī knee

Phonosemantic compound. ⺼ represents the meaning and 桼 represents the sound.

Components

⺼
⺼ Meaning component
ròu meat, flesh

⺼ is a component form of 肉.

桼
桼 Sound component
qī varnish tree, lacquer

Character Evolution

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-Sagartsits-tsik knee

Sources

Character origin
漢語多功能字庫
Readings & variants
Unicode
Historical pronunciations
Baxter-Sagart
Historical images
Academia Sinica

跳 tiào jump

Phonosemantic compound. 足 represents the meaning and 兆 represents the sound.

Components

足
足 Meaning component
zú foot
兆
兆 Sound component
zhào omen

Character Evolution

Seal form
Seal Shuowen ~100 AD
Regular Modern

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-Sagartdewlˤew jump

說文解字

《說文》：“跳，蹶也。从足，兆聲。一曰躍也。”

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)