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Definition of nodule
nodule
/ˈnɑːdʒuːl/
nod · ule
Plural:nodules
•Adjective:nodular
nodule Lexical Profile
CEFR
C1
Grade
11
Tier
2
Usage
Top 10k
Syllables
2
nodule Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A small, rounded mass or concretion of mineral matter that differs in composition from the surrounding rock or sediment in which it is embedded.
Example
"Deep-sea research vessels frequently dredge up manganese nodules from the abyssal plains of the Pacific Ocean."
2
A small, rounded lump or swelling of tissue or cells, especially an abnormal growth in the human body or a nitrogen-fixing swelling on the roots of leguminous plants.
Example
"The radiologist noticed a small benign nodule on the patient's thyroid gland during the routine ultrasound."
Synonyms
View all synonyms for nodule• Rhymes for nodule
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Word Origin & Etymology
Borrowed in the early 17th century from Latin nodulus ('little knot'), a diminutive of nodus ('knot' or 'node').
Cite this Entry
Wordmom. (2026). Definition of Nodule. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/nodule