默算
mò​suàn

mental arithmetic

默 mò silent

Phonosemantic compound. 黑 represents the sound and 犬 represents the meaning.

Components

黑
黑 Sound component
hēi black
Change in sound
犬
犬 Meaning component
quǎn dog

Dogs are not able to speak.

Character Evolution

Seal form
Seal Shuowen ~100 AD
Clerical form
Clerical Western Han 202 BC-9 AD
Clerical form
Clerical Western Jin 266-316 AD
Regular Modern

Historical Pronunciations

說文解字

《說文》：“默，犬暫逐人也。从犬，黑聲。讀若墨。”

Sources

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

算 suàn, suan count

Depicts a tool (具) made from bamboo (⺮) for performing calculations, such as an abacus.

Components

⺮
⺮ Meaning component
zhú bamboo

⺮ is a component form of 竹.

具
具 Meaning component
jù, ju tool

Character Evolution

Seal form
Seal Warring States (Chu) 475-221 BC
Seal form
Seal Western Han 202 BC-9 AD
Seal form
Seal Shuowen ~100 AD
Regular Modern

Component uses

Sound (0 of 4 verified)

篡纂籑篹

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-SagartswanH[s]ˤorʔ-s calculate; tally

說文解字

《說文》：“算，數也，从竹，从具，讀若筭。”

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)