King's Kung-Fu& Tai Chi

Japanese symbol for “radioactivity”

Romaji: houshanou
radioactivity

In Japanese, radioactivity is , read (houshanou).

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 radioactivity
  2. n radiation
  3. n radioactive material

Kanji and stroke order

set free, release, fire
on: ホウ
kun: はな.す、-っぱな.し、はな.つ、はな.れる
8 strokes · JLPT 2
shoot, shine into, onto
on: シャ
kun: い.る、さ.す、う.つ
10 strokes · JLPT 1
ability, talent, skill
on: ノウ
kun: よ.く、あた.う
10 strokes · JLPT 2

Related words

Words that share a kanji.

WordReadingMeaning
ほうそう housoubroadcasting; broadcast; program
かいほう kaihourelease; unleashing; liberation
かいほう kaihouopening (a door, window, etc.); leaving open
ほうだい houdai(doing) as one pleases; to one's heart's content; letting (something) go unchecked
ほうき houkiabandonment; renouncement; renunciation
ついほう tsuihouexile; banishment; eviction
ちゅうしゃ chuushainjection; jab; shot
はんしゃ hanshareflection; reverberation
かのう kanoupossible; potential; practicable

See also: Chinese symbol for “radioactivity”.

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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