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Definition of cancer

cancer

/ˈkæn.sɚ/
can · cer

Plural:cancers
•
Adjective:cancerous
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cancer Lexical Profile

cancer Game Scores & Validity

• noun

1

A serious disease caused by an uncontrolled division of abnormal cells in a part of the body, or a malignant growth or tumor resulting from such cell division.

Example

"Advances in early screening and targeted therapies have significantly improved survival rates for many types of cancer."


2

A northern constellation (the Crab) situated along the ecliptic between Gemini and Leo, or the fourth sign of the zodiac, which the sun enters around the summer solstice (June 21).

Example

"Using a small backyard telescope, we were able to spot the Beehive Cluster nestled within the constellation Cancer."


3

A practice, condition, or phenomenon that is pernicious, destructive, and spreads relentlessly through a society or organization.

Example

"The reform committee warned that unchecked corruption was acting as a cancer within the municipal government."

Synonyms
View all synonyms for cancer

• Rhymes for cancer

Word Origin & Etymology

From Old English 'cancer', borrowed from Latin 'cancer' meaning both 'crab' and 'malignant tumor'. The Latin term served as a calque of Ancient Greek 'karkinos' ('crab'), applied to tumors by Greek physicians like Hippocrates and Galen because the swollen veins surrounding a tumor resembled the limbs of a crab.

Cite this Entry


Wordmom. (2026). Definition of Cancer. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/cancer
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