Japanese symbol for “quadratic”
二次
にじ
Romaji: niji
second
In Japanese, quadratic is 二次, read にじ (niji).
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
- adj-no, n second
- adj-f secondary
- adj-f quadratic (function, equation, etc.); second-order (math)
- adj-no fictional (in relation to anime, manga, etc.); drawn; two-dimensional
Written forms: 二次、２次、虹. Readings: にじ.
Kanji and stroke order
Related words
Words that share a kanji.
| Word | Reading | Meaning |
|---|---|---|
| 二つ | ふたつ futatsu | two |
| 二宮 | にぐう niguu | the Two Ise Shrines |
| 二塁打 | にるいだ niruida | two-base hit; double |
| 二塁 | にるい nirui | second base |
| 二分 | にぶん nibun | halving; dividing (into two parts); bisection |
| 一石二鳥 | いっせきにちょう issekinichou | killing two birds with one stone |
| 次元 | じげん jigen | dimension |
| 次回 | じかい jikai | next time (occasion) |
See also: Chinese symbol for “quadratic”.
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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