Dictionary definition for: Cancer
1. (n) any malignant growth or tumor caused by abnormal and uncontrolled cell division; it may spread to other parts of the body through the lymphatic system or the blood stream
2. (n) (astrology) a person who is born while the sun is in Cancer
3. (n) a small zodiacal constellation in the northern hemisphere; between Leo and Gemini
4. (n) the fourth sign of the zodiac; the sun is in this sign from about June 21 to July 22
5. (n) type genus of the family Cancridae
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