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: トウ、す.く、す.かす、す.ける、とう.る、とう.す
Romaji: tou, su.ku, su.kasu, su.keru, tou.ru, tou.su
Kana
Romaji

Name Reading

Kana: とおる
Romaji: tooru
Kana
Romaji

Meanings

transparent, permeate, filter, penetrate

Stroke Diagram

12345678910

Kanji Info

Stroke Count:  9
Radical Number:  162
Frequency:  1035
Grade:  8
Skip Pattern:  3-3-7
Korean Reading:  tu
Chinese Reading:  tou4
Unicode:  900f
JIS:  4629

Indexes

Halpern Index: 3108
Nelson Index: 4699
New Nelson Index: 6059
Spahn Hadamitzky Index: 2q7.10
Four Corner Index: 3230.2
Guide to Remembering Index: 1647
Gakken Index: 1592
Daikanwanjiten Index: 38876P
Daikanwanjiten Index and Page: 11.0049
Remembering the kanji Index: 915
Kanji Flashcards Index: 1807
Kodansha Compact Index: 698
Kanji in Context Index: 1746
1999 Kanji Learners Index: 1981
2013 Kanji Learners Index: 2677
French Remembering the Kanji Index: 924
Remembering the Kanji 6th Index: 981
Essential Kanji Index: 1152
Kodansha Kanji Index: 3854
Roo 2001 Kanji Index: 2245
Tuttle Kanji Cards Index: 1399

Words

透明 (とうめい)
transparency; cleanness
透過 (とうか)
penetration; permeation; transmission
不透明 (ふとうめい)
opaque; obscure; murky; turbid; opacity; obscurity; unclear; unpredictable; uncertain
透ける (すける)
to be transparent; to show through
透察 (とうさつ)
insight
浸透 (しんとう)
permeation; penetration; soaking; osmosis
透視 (とうし)
seeing through; X-ray (examination); clairvoyance
透析 (とうせき)
dialysis
透かし (すかし)
watermark (in a stamp, banknote, etc.); openwork (engraving, carving, etc.)
透過率 (とうかりつ)
transmittance; permeability
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