堆芯
duī​xīn

reactor core

堆 duī heap, pile

Phonosemantic compound. 土 represents the meaning and 隹 represents the sound.

Components

土
土 Meaning component
tǔ earth
隹
隹 Sound component
zhuī, cuī, wéi bird

Character Evolution

Seal form
Seal Warring States (Chu) 475-221 BC
Regular Modern

Historical Pronunciations

Middle ChineseOld ChineseGloss
Baxter-SagarttwojC.tˤuj heap; mound

Sources

Character origin
漢語多功能字庫
Readings & variants
Unicode
Historical pronunciations
Baxter-Sagart
Historical images
Academia Sinica

芯 xīn pith from rush (juncus effusus)

The heart 心 of a plant 艹; 心 also provides the pronunciation

Components

艹
艹 Meaning component
cao, cǎo grass
心
心 SoundMeaning component
xīn, xin heart

Character Evolution

Clerical form
Clerical Western Han 202 BC-9 AD
Regular Modern

Sources

Readings & variants
Unicode
Historical images
Academia Sinica