cancer

noun

can·​cer ˈkan(t)-sər How to pronounce cancer (audio)
1
capitalized
a
: a northern zodiacal constellation between Gemini and Leo
b(1)
: the fourth sign of the zodiac in astrology see Signs of the Zodiac Table
(2)
: one born under the sign of Cancer
I'm a Taurus, but my best friend is a Cancer.
2
[Latin, crab, cancer]
a
: a malignant tumor of potentially unlimited growth that expands locally by invasion and systemically by metastasis
b
: an abnormal bodily state marked by such tumors
3
: something evil or malignant that spreads destructively
the cancer of hidden resentmentIrish Digest
4
a
: an enlarged tumorlike plant growth (such as that of crown gall)
b
: a plant disease marked by such growths
cancerous
ˈkan(t)s-rəs How to pronounce cancer (audio)
ˈkan(t)-sə-
adjective
cancerously adverb

Did you know?

The Latin word cancer, meaning “crab,” was also given as a name to several diseases. One of the diseases was the abnormal, spreading mass of tissue we call a tumor. A possible explanation for this extended use of cancer is that the Romans thought some tumors looked like many-legged crabs. A French descendant of this Latin word was borrowed into English as canker. It is now applied to several plant and animal disorders. In the 14th century the Latin word cancer in the sense of “tumor” was borrowed directly into English, giving us our modern spelling and sense.

Examples of cancer in a Sentence

He was diagnosed with cancer. She learned that she has cancer. Eating certain foods may help reduce the risk of cancer. Advanced cancers are more difficult to treat. I'm a Taurus, but my best friend is a Cancer.
Recent Examples on the Web Somers, best known for her roles on Three's Company and Step by Step, died at age 76 in October 2023 following a journey with breast cancer. Joelle Goldstein, Peoplemag, 11 Mar. 2024 Diagnosed with thyroid cancer at 39, Cordova was painfully aware of the connection to the tests. Scott MacFarlane, CBS News, 11 Mar. 2024 More:Eagles pay tribute to Jimmy Buffett at final tour kickoff: 'Sailing on that cosmic ocean' Buffett died Sept. 1 after a four-year battle with Merkel cell skin cancer. Melissa Ruggieri, USA TODAY, 11 Mar. 2024 In the winter of 2021, though, Chantara’s dad — who had been diagnosed with advanced liver cancer two years earlier — suddenly started to see his health decline. Kate Talerico, Orange County Register, 11 Mar. 2024 New Hampshire stipulates coverage specifically for alopecia areata, while Connecticut, Maryland, Massachusetts, Oklahoma and Rhode Island provide coverage for individuals with cancer. Ryan MacAsero, The Mercury News, 10 Mar. 2024 Children who have had organ transplants, those who have HIV or kids who are being treated for cancer or autoimmune diseases could be among those who cannot get a vaccine. Kristen Jordan Shamus, Detroit Free Press, 10 Mar. 2024 Sunscreen Allergies Sunscreen is considered a must at the beach to reduce the risk of skin cancer. Daniel More, Verywell Health, 8 Mar. 2024 Cat Janice, the 31-year-old D.C.-area singer who released a viral song dedicated to her son while battling an aggressive form of cancer, died Wednesday, according to her family. Praveena Somasundaram, Washington Post, 29 Feb. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'cancer.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Middle English, from Latin (genitive Cancri), literally, crab; akin to Greek karkinos crab, cancer

First Known Use

14th century, in the meaning defined at sense 1a

Time Traveler
The first known use of cancer was in the 14th century

Dictionary Entries Near cancer

Cite this Entry

“Cancer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cancer. Accessed 19 Mar. 2024.

Kids Definition

cancer

noun
can·​cer ˈkan(t)-sər How to pronounce cancer (audio)
1
capitalized : a group of stars between Gemini and Leo usually pictured as a crab
2
capitalized
a
: the fourth sign of the zodiac see zodiac
b
: a person whose sign of the zodiac is Cancer
3
: a tumor that tends to spread locally and to other parts of the body and often causes death if not treated
also : an abnormal state marked by such tumors
4
: a dangerous evil that destroys slowly
cancerous adjective
Etymology

Middle English Cancer "'Crab' star group," from Latin cancer "crab, cancer (disease)"; sense 3 directly from Latin cancer "crab, cancer" — related to canker, chancre

Word Origin
The Latin word cancer, meaning "crab," was also given as a name to several diseases. One of the diseases was the abnormal, spreading mass of tissue we call a tumor. A possible explanation for this extended use of cancer is that the Romans thought some tumors looked like many-legged crabs. A French descendant of this Latin word was borrowed into English as canker. It is now applied to several plant and animal disorders. In the 14th century the Latin word cancer in the sense of "tumor" was borrowed directly into English, giving us our modern spelling and sense.

Medical Definition

cancer

noun
can·​cer ˈkan(t)-sər How to pronounce cancer (audio)
1
: a malignant tumor of potentially unlimited growth that expands locally by invasion and systemically by metastasis
2
: an abnormal state marked by a cancer
cancerous adjective
Last Updated: - Updated example sentences
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