1) A set of symptoms or conditions that occur together and suggest the presence of a certain disease or an increased chance of developing the disease.

2) The group or recognizable pattern of symptoms or abnormalities that indicate a particular trait or disease.

3) A group of signs and symptoms that occur together and characterize a particular abnormality.

4) A syndrome is a collection of recognizable traits or abnormalities that tend to occur together and are associated with a specific disease.