油压
yóu​yā

oil pressure

油 yóu oil

Phonosemantic compound. 氵 represents the meaning and 由 represents the sound.

Components

氵
氵 Meaning component
shui, shuǐ water

氵 is a component form of 水.

由
由 Sound component
yóu cause

Character Evolution

Bronze form
Bronze Mid Warring States ~300 BC
Seal form
Seal Shuowen ~100 AD
Regular Modern

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-Sagartyuw[l][u] flow(ing)

說文解字

《說文》：“油，水。出武陵孱陵西，東南〔北〕入江。从水，由聲。”

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)

压 yā press, push down Simplified

Simplified form of 壓. Phonosemantic compound. 土 represents the meaning and 厌 represents the sound.

Components

土
土 Meaning component
tǔ earth
厌
厌 SoundSimplified component
yàn dislike

Sources

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

壓 yā press, push down Traditional

Phonosemantic compound. 土 represents the meaning and 厭 represents the sound.

Components

厭
厭 SoundMeaning component
yàn dislike
土
土 Meaning component
tǔ earth

Character Evolution

Seal form
Seal Shuowen ~100 AD
Clerical form
Clerical Xin 9-23 AD
Regular Modern

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-Sagart'aepʔˤrep press down

說文解字

《說文》：“壓，壞也。一曰塞補。从土，厭聲。”

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)