Definition of nodule
: a small mass of rounded or irregular shape: such asa : a small rounded lump of a mineral or mineral aggregateb : a swelling on a leguminous root that contains symbiotic bacteriac : a small abnormal knobby bodily protuberance (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
Origin and Etymology of nodule
Middle English, from Latin nodulus, diminutive of nodus
First Known Use: 15th century
NODULE Defined for English Language Learners
Definition of nodule for English Language Learners
: a small lump on a part of the body or on the root of a plant
NODULE Defined for Kids
Definition of nodule for Students
: a small roundish lump or mass
Seen and Heard
What made you want to look up nodule? Please tell us where you read or heard it (including the quote, if possible).