ヨウ素

Etymology
Compound of. First used by Morisaburō in Rika Nikki (1872). was used by Ryōkai in Shichiyaku Shinsetsu (1860) as 沃顛 and by Heijirō  in Kagaku Nyūmon (1867–1870) as  from.

Noun

 * 1) iodine, I