cortex

cortex

Couche extérieure d’un organe, comme le cerveau ou un rein.

En anglais simple : 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.

Expressions courantes : cerebral cortex, renal cortex, motor cortex

cortex, écorce

Couche d’une tige ou d’une racine entre la surface et les tissus qui transportent l’eau et les nutriments.

En anglais simple : 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.

Expressions courantes : root cortex, stem cortex, plant cortex

cortex

Couche naturelle qui recouvre un morceau de silex.

En anglais simple : 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.

Synonymes : crust

Expressions courantes : flint cortex, weathered cortex, remaining cortex