イオン
ion[iõ̞ɴ]
The English word "ion" is イオン in Japanese.
イオン is a noun referring to an atom or group of atoms bearing an electrical charge.
Meaning: atom or group of atoms bearing an electrical charge (noun)
How do you pronounce it?
The romanization is ion.
Did you know?
- Although the word イオン is used for the scientific term, it is also the name of a massive Japanese retail company. You might see this word on grocery store signs more often than in a science textbook.
- The term マイナスイオン refers to 'negative ions' and is frequently used in Japan to describe the refreshing feeling of being near a waterfall or in a forest.
- The word イオン was adopted into Japanese from the German word 'Ion', which itself came from English.
Examples in context
- イオンって簡単に理解できるような気がする。I feel like ions are easy to understand.
- イオンが移動しています。ion ga idou shite imasu.Ions are moving.
- この液体にはイオンが含まれています。kono ekitai ni wa ion ga fukumarete imasu.This liquid contains ions.
- イオンのバランスを考えましょう。ion no baransu o kangaemashou.Let's consider the balance of ions.
Example conversation
Daito and Misaki are studying chemistry together.
- 大翔 Hiroto美咲、イオンの説明を教えてくれる？Misaki, ion no setsumei o oshiete kureru?Misaki, can you explain what an ion is?
- 美咲 Misakiいいよ。電子を失ったり得たりした原子のことだよ。Ii yo. Denshi o shinattari ettari shita genshi no koto da yo.Sure. It's an atom that has lost or gained electrons.
- 大翔 Hirotoなるほど、イオンになると性質が変わるんだね。Naruhodo, ion ni naru to seishitsu ga kawaru nda ne.I see, so the properties change when it becomes an ion.
- 美咲 Misakiそうだよ。大翔はもう理解できたね。Sou da yo. Daito wa mou rikai dekita ne.That's right. Daito, you've got it now.
Sources
- Wiktionary, “ion” translations and entries イオン, CC BY-SA 4.0, dump of 2026-09-26.
- Word origins: Wiktionary entries イオン, CC BY-SA 4.0.
