Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: mucus  myoo-kus
  1. Protective secretion of the mucous membranes; in the gut it lubricates the passage of food and protects the epithelial cells; in the nose and throat and lungs it can make it difficult for bacteria to penetrate the body through the epithelium
    - mucous secretion

Sounds like: Mrs, missus, missis, misucus, mu

Derived forms: mucuses

Type of: secretion

Encyclopedia: Mucus