cortex

皮質

脳や腎臓などの臓器の外側にある層。

やさしい英語で： The outer layer of an organ, such as the brain or a kidney.

• The cortex is an outer layer.
• The scan showed damage to the cerebral cortex.
• The kidney has a cortex surrounding its inner region.

よく使う表現： cerebral cortex, renal cortex, motor cortex

皮層

植物の茎や根で、表皮と水や養分を運ぶ組織の間にある層。

やさしい英語で： A layer inside a plant stem or root, between its outer skin and its transport tissues.

• The root cortex stores food.
• Water passes through the cortex toward the central tissues.
• They examined cells from the stem cortex.

よく使う表現： root cortex, stem cortex, plant cortex

自然面、石皮

火打ち石の外側を覆う自然の層。

やさしい英語で： The natural outer covering of a piece of flint stone.

• The flint still has its cortex.
• The maker removed the cortex before shaping the tool.
• White cortex covered one side of the stone.

類義語： crust

よく使う表現： flint cortex, weathered cortex, remaining cortex