龋洞
qǔ​dòng

cavity

龋 qǔ tooth decay Simplified

Phonosemantic compound. 齿 represents the meaning and 禹 represents the sound. Simplified form of 齲.

Components

齿
齿 Meaning component
chǐ teeth
禹
禹 Sound component
yǔ insect; proper name

Sources

Readings & variants
Unicode

洞 dòng cave

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

Components

氵
氵 Meaning component
shui, shuǐ water

氵 is a component form of 水.

同
同 Sound component
tóng, tong, tòng together

Character Evolution

Seal form
Seal Shuowen ~100 AD
Clerical form
Clerical Eastern Han 25-220 AD
Clerical form
Clerical Eastern Han 25-220 AD
Regular Modern

Historical Pronunciations

Middle ChineseOld Chinese
Zhengzhangdoːŋ
doːŋs
Unicodedhùng
dhung

說文解字

《說文》：“洞，疾流也。从水，同聲。”

Sources

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

齲 tooth decay Traditional

Phonosemantic compound. 齒 represents the meaning and 禹 represents the sound.

Components

齒
齒 Meaning component
chǐ teeth
禹
禹 Sound component
yǔ insect; proper name

Character Evolution

Oracle form
Oracle Bone ~1250-1000 BC
Seal form
Seal Shuowen ~100 AD
Seal form
Seal Shuowen ~100 AD
Regular Modern

Historical Pronunciations

Old Chinese
Zhengzhangkʰʷaʔ

Sources

Readings & variants
Unicode
Historical pronunciations
Zhengzhang Shangfang
Historical images
Academia Sinica