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: ケイ、ほたる
Romaji: kei, hotaru
Kana
Romaji

Meaning

firefly

Stroke Diagram

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Kanji Info

Stroke Count:  16
Radical Number:  142
Frequency: 
Grade: 
Skip Pattern:  2-8-8
Korean Reading:  hyeong
Chinese Reading:  ying2
Unicode:  87a2
JIS:  6A25

Indexes

Halpern Index: 2813
Nelson Index: 4176
New Nelson Index: 5365
Spahn Hadamitzky Index: 3n8.2
Four Corner Index: 9913.6
Daikanwanjiten Index: 33434
Daikanwanjiten Index and Page: 10.0074
Kodansha Kanji Index: 3489
Roo 2001 Kanji Index: 971

Words

(ほたる、ホタル)
firefly (Luciola cruciata); lightning bug; glowworm
蛍光ペン (けいこうペン)
highlighter; highlighter pen
蛍石 (ほたるいし、けいせき)
fluorite; fluorspar
螢火 (けいか、ほたるび)
light of a firefly
蛍光 (けいこう)
fluorescence
蛍光灯 (けいこうとう)
fluorescent lamp; fluorescent light; person who is slow to react; someone slow on the uptake
蛍雪 (けいせつ)
diligence in studying (e.g. continuing to study even in such poor light as offered by a firefly or that reflected by snow); diligent study
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