Pus is a thick yellow or yellow/green liquid that forms at the location of an established infection.
Pus usually contains dead leucocytes, bacteria (that may be living or dead, or some of each), and fragments of dead tissue.
Related terms include mucopus (which is a mixture of mucus and pus), and seropus (which is a mixture of serum and pus).
Here are some links to some areas of this website that include or use knowledge of the meaning of the word 'pus':
- Labelled diagram of the structure of skin
- List of types of skin pigmentation conditions
- Glossary section for words about the structures of skin
- Glossary section for common skin conditions (skin diseases and disorders)
- Glossary section for skin lesions
- Glossary section for general medical terms