ヨウ素

Japanese
Kanji in this term
素
そ
Grade: 5
on’yomi
Chemical element
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Alternative forms

Etymology

Compound of 沃 (yō, used phonetically) +‎ 素 (so, “chemical element”). First used by Morisaburō Ichikawa in Rika Nikki (1872).[1] 沃 was used by Shiba Ryōkai in Shichiyaku Shinsetsu (1860) as 沃顛[2] and by Heijirō Takehara in Kagaku Nyūmon (1867-1870) as 沃陳 (ヨヂウム) from Dutch jodium.

Pronunciation

Noun

ヨウ素 (hiragana and katakana ヨウそ, rōmaji yōso)

  1. iodine, I
    放射性のヨウ素131
    ほうしゃせいのようそ131
    hōshasei no yōso 131
    radioactive iodine-131

References
  1. Fumiko Kōji, Shōzō Kobayashi, Hiroyuki Hirata, 日本各地の明治中期の理科授業筆記の発見と当時の元素教育
  2. 潘吉星, 中外科學之交流, 1993, →ISBN, page 316
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