noun
hydrogen ion
Scientific term used in chemistry; refers to a positively charged hydrogen atom (H⁺).
酸性の溶液には水素イオンが多く含まれている。
Acidic solutions contain many hydrogen ions.
Hydroxide ion (OH⁻), often contrasted with hydrogen ion in acid-base chemistry.
Compound of 水素 (hydrogen) and イオン (ion), a straightforward scientific term.