雷诺数
Léi​nuò​shù

Reynolds number

雷 léi thunder

Depicts rain (雨) and lightning (申) together.

Components

雨
雨 Iconic component
yǔ rain
申
申 Iconic component
shēn to extend

Depicts a lightning bolt. Modern form looks like unrelated 田.

Change in form
Due to historical stylistic changes, this component is less similar to 申 than it was in ancient scripts.

Character Evolution

Oracle form
Oracle Bone ~1250-1000 BC
Oracle form
Oracle Bone ~1250-1000 BC
Oracle form
Oracle Bone ~1250-1000 BC
Oracle form
Oracle Bone ~1250-1000 BC
Oracle form
Oracle Bone ~1250-1000 BC
Bronze form
Bronze Early Western Zhou ~1000 BC
Bronze form
Bronze Early Western Zhou ~1000 BC
Bronze form
Bronze Early Western Zhou ~1000 BC
Bronze form
Bronze Mid Western Zhou ~900 BC
Bronze form
Bronze Mid Western Zhou ~900 BC
Seal form
Seal Warring States (Chu) 475-221 BC
Seal form
Seal Warring States (Chu) 475-221 BC
Seal form
Seal Shuowen ~100 AD
Seal form
Seal Shuowen ~100 AD
Seal form
Seal Shuowen ~100 AD
Seal form
Seal Shuowen ~100 AD
Clerical form
Clerical Qin 221-206 BC
Clerical form
Clerical Western Han 202 BC-9 AD
Clerical form
Clerical Western Han 202 BC-9 AD
Clerical form
Clerical Western Han 202 BC-9 AD
Clerical form
Clerical Eastern Han 25-220 AD
Clerical form
Clerical Eastern Han 25-220 AD
Clerical form
Clerical Three Kingdoms (Cao Wei) 222-280 AD
Regular Modern

Component uses

Sound (1 of 4 verified)

蕾擂镭檑

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-SagartlwojC.rˤuj thunder

說文解字

《說文》：“靁，陰陽薄動，靁雨生物者也，从雨，畾象回轉形。，古文靁。，古文靁。，籀文，靁間有回，回，靁聲也。”

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)

诺 nuò promise Simplified

Phonosemantic compound. 讠 represents the meaning and 若 represents the sound. Simplified form of 諾.

Components

讠
讠 Meaning component
yán speech

讠 is a component form of 言.

若
若 Sound component
ruò if

Sources

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

数 shù, shǔ, shu number Simplified

Simplified form of 數. Phonosemantic compound. 攵 represents the meaning and 婁 represents the sound.

Components

攵
攵 Meaning component
pū tap

攵 is a component form of 攴.

娄
娄 Sound component
lóu, lǚ, lǘ surname
Change in sound

Component uses

Sound (0 of 2 verified)

擞薮

Historical Pronunciations

Sources

Readings & variants
Unicode

諾 promise Traditional

Phonosemantic compound. 言 represents the meaning and 若 represents the sound.

Components

言
言 Meaning component
yán speech
若
若 Sound component
ruò if

Character Evolution

Bronze form
Bronze Mid Western Zhou ~900 BC
Seal form
Seal Shuowen ~100 AD
Clerical form
Clerical Western Han 202 BC-9 AD
Clerical form
Clerical Eastern Han 25-220 AD
Regular Modern

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-Sagartnaknˤak agree, say yes

說文解字

《說文》：“諾，也。从言，若聲。”

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)

數 shù, shǔ, shu number Traditional

Phonosemantic compound. 攵 represents the meaning and 婁 represents the sound.

Components

攵
攵 Meaning component
pū tap

攵 is a component form of 攴.

婁
婁 Sound component
surname
Change in sound

Character Evolution

Seal form
Seal Qin 221-206 BC
Seal form
Seal Shuowen ~100 AD
Clerical form
Clerical Qin 221-206 BC
Clerical form
Clerical Western Han 202 BC-9 AD
Clerical form
Clerical Western Han 202 BC-9 AD
Clerical form
Clerical Eastern Han 25-220 AD
Clerical form
Clerical Eastern Han 25-220 AD
Regular Modern

Component uses

Sound (0 of 2 verified)

擻藪

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-SagartsrjuXs-roʔ count (v.)
srjuHs-roʔ-s number (n.)
sraewks-rok frequently

說文解字

《說文》：“數，計也。从攴，婁聲。”

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)