Japanese edit

Kanji in this term
たん
Grade: 4

Grade: 4
けい
Grade: 6
Alternative spelling
SI單位系 (kyūjitai)

Etymology edit

SI (SI) +‎ 単位系 (unit system)

Noun edit

SI(エスアイ)(たん)()(けい) (esuai tan'ikei

  1. The International System of Units, SI.