What does noncancerous mean?
Noncancerous is an adjective meaning that something is not cancerous. It is used particularly for a tumor, growth, mass, or lesion that a medical professional has determined is not malignant. In a diagnosis, the term can be reassuring, but it does not necessarily mean that the condition is medically trivial: a noncancerous growth may still be painful, obstructive, or require monitoring or removal. The word is common in medical reports, healthcare conversations, and patient information. It is more direct than saying a finding is benign, while remaining more specific than the broad expression harmless. Noncancerous is used in both British and American English and contrasts with terms such as cancerous and malignant.
adjectiveNot cancerous; benign or free of malignant disease. It describes a growth, lesion, or other abnormality that does not contain or consist of cancer.
- Not cancerous or malignant.
- Free of cancerous disease; not affected by cancer.
"The biopsy showed that the lump was noncancerous, so no further treatment was needed."
"Doctors determined that the growth was noncancerous."
"The report describes the lesion as noncancerous and recommends routine monitoring."
From cancer to noncancerous, the word gives a clear answer to a common medical question: is this growth dangerous because it is cancerous?
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does noncancerous come from?
Noncancerous is formed in English from the prefix non-, meaning “not,” and cancerous, which in turn comes from cancer, a word borrowed from Latin for a crab and later applied to malignant growths. The Latin word cancer also gave rise to related English forms such as carcinoma and carcinogenic. The prefix non- was added to express the absence of cancer in modern medical usage.
Related word forms
How noncancerous is actually used
Most often used in medical contexts, especially with growths, tumors, masses, and lesions. It is generally more specific and less euphemistic than saying that something is harmless, since a noncancerous condition may still require medical attention.
Easily confused with noncancerous
Benign describes a growth or condition that is not malignant, while noncancerous more directly states that something does not involve cancer.
Cancerous means containing or affected by cancer, whereas noncancerous means the opposite.