懂中文 Dong Chinese

昙

tán

become cloudy

The sun 日 hidden behind a cloud 云

Components
日 meaning component

日  Meaning component

rì

  

sun

云 meaning component

云  Meaning component

yún

  

clouds

Evolution

昙 Seal script Shuowen (~100 AD)

Seal script

Shuowen (~100 AD)
昙 Seal script Western Han dynasty (202 BC-9 AD)

Seal script

Western Han dynasty (202 BC-9 AD)
昙 Traditional script Modern

Traditional script

Modern
昙 Simplified script Modern

Simplified script

Modern
Definitions

昙 (曇) 

tán

become cloudy, overcast; dark clouds

Most common words with 昙
Freq.
Word
Meaning

昙花一现

short-lived

昙

dark clouds

昙花

Dutchman's pipe cactus, aka Queen of the Night cactus (Epiphyllum oxypetalum)