noun
The ninth letter of the English alphabet, used in Japanese contexts such as sizes, grades, or Roman-letter abbreviations.
サイズはS、M、L、そしてIはあまり見かけない。
Sizes are S, M, L, and I is rarely seen.
noun
Only when written I
Chemical symbol for iodine (element 53). Used in scientific contexts; the Japanese name is ヨウ素.
See also: ヨウ素
元素記号のIはヨウ素を表す。
The element symbol I stands for iodine.