cancer cancer /ˈkænsɝ/

noun

1. () 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  ( malignant neoplastic disease , cancer )
   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
     She underwent chemotherapy to treat her breast cancer.
   She underwent chemotherapy to treat her breast cancer.
   

 Cancer

1. Type genus of the family Cancridae  ( Cancer , genus Cancer )
   type genus of the family Cancridae
   
2. The fourth sign of the zodiac; the sun is in this sign from about June 21 to July 22  ( Cancer , Cancer the Crab , Crab )
   the fourth sign of the zodiac; the sun is in this sign from about June 21 to July 22
   
   
3. A small zodiacal constellation in the Northern Hemisphere; between Leo and Gemini  ( Cancer )
   a small zodiacal constellation in the Northern Hemisphere; between Leo and Gemini
    My stargazing app showed that Cancer was visible in the night sky last night.
   My stargazing app showed that Cancer was visible in the night sky last night.
   
   
4. (astrology) a person who is born while the sun is in Cancer  ( Cancer , Crab )
   (astrology) a person who is born while the sun is in Cancer