化学需氧量
huà​xué​xū​yǎng​liàng

chemical oxygen demand

化 huà change

Pictograph of a right-side up person (亻) and an upside-down person (𠤎), depicting the meaning "turn around" or "transform".

Components

亻
亻 Iconic component
rén person

亻 is a component form of 人.

𠤎
𠤎 Iconic component
huà upside-down person

Depicts an upside-down person.


Character Evolution

Oracle form
Oracle Bone ~1250-1000 BC
Bronze form
Bronze Spring and Autumn 771-476 BC
Seal form
Seal Warring States (Chu) 475-221 BC
Seal form
Seal Qin 221-206 BC
Seal form
Seal Shuowen ~100 AD
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
Regular Modern

Component uses

Sound (4 of 7 verified)

花华货靴讹貨訛

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-SagartxwaeHqʷʰˤ<r>aj-s transform

說文解字

《說文》：“化，教行也。从，从人，亦聲。”

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)

学 xué learning Simplified

Simplified form of 學. Depicts two hands (𦥑) teaching a child (子) under a roof (宀). 爻 represents the sound.

Components

◎
◎ Simplified component
characterless component

Shorthand for the 𦥑 and 爻 components in the traditional character 學.

宀
宀 Iconic component
mián roof
子
子 Iconic component
zi, zǐ child

Component uses

Sound (1)

觉

Remnant (1)

觉

Sources

Readings & variants
Unicode

需 xū need

Original meaning: become wet

Pictograph of a person standing under the rain (雨), representing the meaning "become wet", now written as 濡. The current meaning is a phonetic loan. The person component was later replaced with the phonetic component 而.

Components

雨
雨 Iconic component
yǔ rain
而
而 Sound component
ér and
Change in sound

Character Evolution

Bronze form
Bronze Early Western Zhou ~1000 BC
Bronze form
Bronze Late Western Zhou ~800 BC
Seal form
Seal Warring States (Chu) 475-221 BC
Seal form
Seal Shuowen ~100 AD
Clerical form
Clerical Eastern Han 25-220 AD
Regular Modern

Component uses

Sound (1 of 11 verified)

儒懦蠕孺嚅糯濡薷襦颥顬

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-Sagartsjus-no wait

說文解字

《說文》：“需，也，遇雨不進止也。从雨，而聲。《易》曰：‘雲上於天，需。’”

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)

氧 yǎng oxygen

Phonosemantic compound. 气 represents the meaning and 羊 represents the sound.

Components

气
气 Meaning component
qì, qi air
羊
羊 Sound component
yáng sheep

Sources

Readings & variants
Unicode

量 liàng, liang, liáng measure

Phonosemantic compound. 東 (pictograph of a bag) represents the meaning and 昜 represents the sound.

Components

昜
昜 SoundRemnant component
yáng bright

Modern form written like 旦.

Change in form
Due to historical stylistic changes, this component is less similar to 昜 than it was in ancient scripts.
東
東 IconicRemnant component
dōng east

Depicts a bag. Modern form written like 里.

Change in form
Due to historical stylistic changes, this component is less similar to 東 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
Bronze form
Bronze Early Western Zhou ~1000 BC
Bronze form
Bronze Mid Western Zhou ~900 BC
Bronze form
Bronze Late Western Zhou ~800 BC
Bronze form
Bronze Late Warring States ~250 BC
Seal form
Seal Warring States (Chu) 475-221 BC
Seal form
Seal Qin 221-206 BC
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
Regular Modern

Component uses

Sound (1)

糧

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-Sagartljang[r]aŋ measure (v.)
ljangH[r]aŋ-s measure (n.)

說文解字

《說文》：“量，稱輕重也。从重省，曏省聲。，古文量。”

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)

學 xué learning Traditional

Depicts two hands (𦥑) teaching a child (子) under a roof (宀). 爻 represents the sound.

Components

𦥑
𦥑 Iconic component
jú, jǔ, póu two hands

Depicts two hands.

爻
爻 Sound component
yáo, xiào diagrams for divination
Change in sound
宀
宀 Iconic component
mián roof

Depicts a roof.

子
子 Iconic component
zi, zǐ child

Depicts a child.

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
Bronze form
Bronze Early Western Zhou ~1000 BC
Bronze form
Bronze Early Western Zhou ~1000 BC
Bronze form
Bronze Early Warring States ~400 BC
Bronze form
Bronze Late Warring States ~250 BC
Seal form
Seal Warring States (Chu) 475-221 BC
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
Regular Modern

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-Sagarthaewkm-kˤruk study; imitate

說文解字

《說文》：“斆，覺悟也。从教，从冖，冖，尚矇也，臼聲。學，篆文斅省。”

Sources

Character origin
季旭昇《說文新證》p.247-248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)