1. a small tube, especially in a plant or animal body
Usage: anatomy; biology

Examples

• The kidney contains thousands of tiny tubules that filter waste from the blood.
• Damage to the renal tubules can affect kidney function.
• Each tubule in the nephron plays a specific role in urine formation.
• The plant’s root tubules help absorb water and nutrients from the soil.
• Scientists studied the structure of the microscopic tubules under high magnification.
• The tubules in the inner ear are essential for maintaining balance.