This site will be taken down March 31st, 2026.

This was not an easy decision to make. For the last couple years, I have been struggling to find motivation for this site and to keep up with basic maintenance and security updates. With the rise of AI and more sophisticated tools, the usefulness of sites like this is questionable and traffic has nose-dived. I just don't have it in me to keep doing this. Thank you all for 10 years of support!

Zach

Readings

Kana: サン、す.い
Romaji: san, su.i
Kana
Romaji

Meanings

acid, bitterness, sour, tart

Stroke Diagram

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Kanji Info

Stroke Count:  14
Radical Number:  164
Frequency:  1218
Grade:  5
Skip Pattern:  1-7-7
Korean Reading:  san
Chinese Reading:  suan1
Unicode:  9178
JIS:  3B40

Indexes

Halpern Index: 1563
Nelson Index: 4789
New Nelson Index: 6177
Spahn Hadamitzky Index: 7e7.2
Four Corner Index: 1364.7
Guide to Remembering Index: 689
Gakken Index: 1027
Daikanwanjiten Index: 39871
Daikanwanjiten Index and Page: 11.0373
Remembering the kanji Index: 1437
Kanji Flashcards Index: 1838
Kodansha Compact Index: 1797
Read Writing Kanji Third Index: 715
Kanji in Context Index: 1420
1999 Kanji Learners Index: 1049
2013 Kanji Learners Index: 1415
French Remembering the Kanji Index: 1449
Remembering the Kanji 6th Index: 1545
Essential Kanji Index: 819
Kodansha Kanji Index: 1968
Roo 2001 Kanji Index: 3267
Read Writing the Kanji Index: 618
Tuttle Kanji Cards Index: 791

Words

(さん)
acid; sourness; sour taste
酸素 (さんそ)
oxygen (O)
酸性 (さんせい)
acidity; acidic
核酸 (かくさん)
nucleic acid
グルタミン酸 (グルタミンさん)
glutamic acid
酸化 (さんか)
oxidation; oxidization
アミノ酸 (アミノさん)
amino acid
塩酸 (えんさん)
hydrochloric acid
一酸化 (いっさんか)
monoxide
強酸 (きょうさん)
strong acid
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