烂透
làn​tòu

completely rotten

烂 làn rotten Simplified

Phonosemantic compound. 火 represents the meaning and 兰 represents the sound. Simplified form of 爛.

Components

火
火 Meaning component
huǒ fire
兰
兰 Sound component
lán orchid

Sources

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

透 tòu penetrate

Phonosemantic compound. 辶 represents the meaning and 秀 represents the sound.

Components

辶
辶 Meaning component
chuò walk

辶 is a component form of 辵.

秀
秀 Sound component
xiù elegant, excellent

Character Evolution

Seal form
Seal Shuowen ~100 AD
Regular Modern

Historical Pronunciations

Middle ChineseOld Chinese
Zhengzhangl̥ʰoːs
hljuɡ
Unicodetòu

說文解字

《說文新附》：“透，跳也；過也。从辵，秀聲。”

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)

爛 làn rotten Traditional

Phonosemantic compound. 火 represents the meaning and 闌 represents the sound.

Components

火
火 Meaning component
huǒ fire
闌
闌 Sound component
door screen

Character Evolution

Seal form
Seal Shuowen ~100 AD
Seal form
Seal Shuowen ~100 AD
Regular Modern

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-SagartlanH[r]ˤan-s cooked until soft

說文解字

《說文》：“爤，孰也。从火，蘭聲。燗，或从閒。”

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)