A nodule is a small, raised bump under the skin. You might notice a nodule on the top of your foot after spraining your ankle.

Any solid bump or node that you can feel just beneath your skin is a nodule. You may have noticed nodules in your neck when you have a sore throat or a nodule on your shin where you bumped it into the coffee table. Another kind of nodule is very similar, but appears on a plant's surface. The Latin root word is nodulus, "small knot," from nodus, or "knot."

Definitions of nodule
  1. noun
    a small node
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    type of:
    any bulge or swelling of an anatomical structure or part
  2. noun
    small rounded wartlike protuberance on a plant
    synonyms: tubercle
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    type of:
    enation, plant process
    a natural projection or outgrowth from a plant body or organ
  3. noun
    (mineralogy) a small rounded lump of mineral substance (usually harder than the surrounding rock or sediment)
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    (mineralogy) a hollow rock or nodule with the cavity usually lined with crystals
    type of:
    hunk, lump
    a large piece of something without definite shape
Word Family

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