NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,380 terms related to cancer and medicine.
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- listen (TRIH-ger)
- In medicine, a specific event that starts a process or that causes a particular outcome. For example, chemotherapy, painful treatments, or the smells, sounds, and sights that go with them may trigger anxiety and fear in a patient who has cancer. In allergies, exposure to mold, pollen or dust may trigger sneezing, watery eyes, and coughing.