中ちゅう肋ろく

noun

midrib; rachis

Botanical term for the central vein of a leaf or the axis of a compound leaf or inflorescence.

• 葉はの中ちゅう肋ろくがはっきり見みえる。

  The midrib of the leaf is clearly visible.

• この植しょく物ぶつの中ちゅう肋ろくは特とくに太ふとい。

  The midrib of this plant is especially thick.