King's Kung-Fu& Tai Chi

Japanese symbol for “obsidian”

Romaji: kokuyouseki
obsidian

In Japanese, obsidian is , read (kokuyouseki).

Before using these characters for a tattoo, check them with a native speaker. Dictionary words often have several meanings, and the right choice depends on context.

Meanings

  1. n obsidian (min)

Written forms: . Readings: .

Kanji and stroke order

black
on: コク
kun: くろ、くろ.ずむ、くろ.い
11 strokes · JLPT 3
weekday
on: ヨウ
18 strokes · JLPT 3
stone
on: セキ、シャク、コク
kun: いし
5 strokes · JLPT 2

Other Japanese words for “obsidian”

WordReadingMeaning
こくようがん kokuyouganobsidian
ばていせき bateisekiobsidian

Related words

Words that share a kanji.

WordReadingMeaning
こくじん kokujinblack person
くろい kuroiblack
くろじ kuroji(being in) the black; surplus
こくばん kokubanblackboard
あんこく ankokudarkness
しろくろ shirokuroblack and white; monochrome
にちよう nichiyouSunday
どよう doyouSaturday
せきゆ sekiyuoil; petroleum

See also: Chinese symbol for “obsidian”.

Data: JMdict (CC BY-SA 4.0); KANJIDIC2 (CC BY-SA 4.0); KanjiVG (CC BY-SA 3.0); wordfreq (CC BY-SA 4.0 (data)). Retrieved 2026-10-22.

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