- 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.
National Cancer Institute
- The group or recognizable pattern of symptoms or abnormalities that indicate a particular trait or disease.
Definition from: Human Genome Project Information
at the U.S. Department of Energy
- A group of signs and symptoms that occur together and characterize a particular abnormality.
Definition from: Merriam-Webster's Medical Dictionary by Merriam-Webster Inc.
- A syndrome is a collection of recognizable traits or abnormalities that tend to occur together and are associated with a specific disease.
Definition from: Talking Glossary of Genetic Terms from the National Human Genome Research Institute
Related discussion in the Handbook
See also Understanding Medical Terminology.