Explore Words Kanji Grammar Guides

Copyright © 2026 Kotomora. All Rights Reserved.

Get the Kotomora apps for iOS and Android.

Explore Words Kanji Grammar Guides About Support Privacy

Copyright © 2026 Kotomora. All Rights Reserved.

放射性同位元素 (ほうしゃせいどういげんそ) Japanese meaning | Kotomora

放ほう射しゃ性せい同どう位い元げん素そ

ほ

う

しゃ

せ

い

ど

う

い

げ

ん

そ

Meanings

1

radioisotope; radioactive isotope

Technical term in physics; synonymous with 放射性同位体 (ほうしゃせいどういたい).

See also: 放射性同位体

放ほう

射しゃ

性せい

同どう

位い

元げん

素そ

は

医い

療りょう

や

工こう

業ぎょう

で

利り

用よう

さ

れ

て

いる

。

Radioisotopes are used in medicine and industry.

Kanji

放set free, release, fire
射shoot, shine into, onto
性sex, gender, nature
同same, agree, equal
位rank, grade, throne
元beginning, former time, origin
素elementary, principle, naked

Related words

放ほう射しゃ性せい同どう位い体たい
Synonym; 放射性同位元素 is slightly more formal and used in physics contexts, while 放射性同位体 is more common in general scientific writing.

Built from

放ほう射しゃ性せい+同どう位い元げん素そ

Etymology

Compound of 放射性 (radioactivity) + 同位元素 (isotope). The term is a direct translation of the English 'radioactive isotope'.