一いち分ぶ

noun

one tenth; one hundredth; one percent; one tenth of a sun; one quarter ryō

Historical and technical unit of proportion. In modern contexts, often means 10% or 1%, depending on the field. The sun and ryō senses are archaic monetary/measurement uses.

• この合ごう金きんには金きんが一いち分ぶ含ふくまれている。

  This alloy contains one tenth gold.

• 江え戸ど時じ代だい、一いち分ぶは一いち両りょうの四し分ぶんの一いちだった。

  In the Edo period, one bu was a quarter of a ryō.