nodule
noun
nod·ule
ˈnä-(ˌ)jül 
: a small mass of rounded or irregular shape: such as
a
: a small rounded lump of a mineral or mineral aggregate
b
: a swelling on a leguminous root that contains symbiotic bacteria
c
: a small abnormal knobby bodily protuberance (such as a tumorous growth or a calcification near an arthritic joint)
Examples of nodule in a Sentence
The examination revealed a nodule on his lung.
a nodule on the leaf indicated that a worm had laid eggs there
Recent Examples on the Web
Biden, who is now 82, was diagnosed on May 16 with prostate cancer that had spread to the bone after a nodule was discovered on his prostate following urinary symptoms, a spokesperson said.
—
Joey Garrison, USA Today, 21 May 2025
The area is known to have an abundant supply of rocky deposits the size of potatoes called polymetallic nodules.
—ArsTechnica, 19 May 2025
Biden’s office announced on Sunday that he had been diagnosed with cancer on Friday, after doctors found a nodule on his prostate.
—Chantelle Lee, Time, 19 May 2025
Not all prostate nodules indicate cancer — many are benign and associated with conditions enlarged prostate (BPH), or prostate stones (calcifications).
—Dr. Jamin Brahmbhatt, CNN Money, 19 May 2025
See All Example Sentences for nodule
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Joey Garrison, USA Today, 21 May 2025
The area is known to have an abundant supply of rocky deposits the size of potatoes called polymetallic nodules.
—ArsTechnica, 19 May 2025
Biden’s office announced on Sunday that he had been diagnosed with cancer on Friday, after doctors found a nodule on his prostate.
—Chantelle Lee, Time, 19 May 2025
Not all prostate nodules indicate cancer — many are benign and associated with conditions enlarged prostate (BPH), or prostate stones (calcifications).
—Dr. Jamin Brahmbhatt, CNN Money, 19 May 2025
See All Example Sentences for nodule
Cite this Entry
“Nodule.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nodule. Accessed 3 Jun. 2025.
Copy CitationKids Definition
nodule
noun
nod·ule
ˈnäj-(ˌ)ü(ə)l
1
: a small rounded mass
manganese nodules on the ocean floor
2
: a swelling on the root of a plant of the legume family that contains nitrogen-fixing bacteria
nodular
adjective
ˈnäj-ə-lər
Medical Definition
nodule
noun
nod·ule
ˈnäj-(ˌ)ü(ə)l
: a small mass of rounded or irregular shape: as
a
: a small abnormal knobby bodily protuberance (as a tumorous growth or a calcification near an arthritic joint)
b
: the nodulus of the cerebellum
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