B-grade; second-class
Used in grading or classification systems, often contrasted with 甲種 (A-grade). Common in contexts like licenses, examinations, or product categories.
See also: 甲乙丙 (こうおつへい)
To obtain a B-grade license, the requirements are less strict than for an A-grade license.
この試験は甲種と乙種に分かれている。
This examination is divided into A-grade and B-grade.
Compound of 乙 (second, latter) and 種 (kind, class). The exact historical derivation is uncertain, but the combination is conventionally used to denote a secondary or B-grade category.