Japanese symbol for “reactivity”

反応性

はんのうせい

Romaji: hannousei

reactivity

In Japanese, reactivity is 反応性, read はんのうせい (hannousei).

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

n reactivity (chem)

Kanji and stroke order

反

anti-

on: ハン、ホン、タン、ホ
kun: そ.る、そ.らす、かえ.す、かえ.る

4 strokes · JLPT 2

応

apply, answer, yes

on: オウ、ヨウ、-ノウ
kun: あた.る、まさに、こた.える

7 strokes · JLPT 2

性

sex, gender, nature

on: セイ、ショウ
kun: さが

8 strokes · JLPT 2

Related words

Words that share a kanji.

Word	Reading	Meaning
反対	はんたい hantai	opposition; resistance; antagonism
反応	はんのう hannou	reaction; response
違反	いはん ihan	violation; offense; offence
反発	はんぱつ hanpatsu	opposition; rebellion; revolt
反省	はんせい hansei	reflection; reconsideration; introspection
反乱	はんらん hanran	insurrection; mutiny; rebellion
対応	たいおう taiou	correspondence (to); equivalence
応援	おうえん ouen	aid; assistance; help
女性	じょせい josei	woman; female

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.