Definition
Mucous describes something that contains or resembles mucus, the slimy substance that protects and lubricates many parts of your body. It can refer to a membrane that secretes mucus, like the mucous membranes lining your respiratory tract. These membranes help trap dirt and germs, preventing them from causing harm. Think of it as your body's natural defense system. Mucous is essential for keeping tissues moist and functioning correctly. Without it, surfaces would dry out and become vulnerable to damage. For instance, your nose has a mucous lining to filter the air you breathe.