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1. Oxford American Dictionary

   nodule

   • IPA[ˈnäjo͞ol]

   美式

   • n.
     a small swelling or aggregation of cells in the body, especially an abnormal one；a swelling on a root of a leguminous plant, containing nitrogen-fixing bacteria.

   • noun: nodule, plural noun: nodules

2. • 釋義

   n.

   名詞

   • 1. a small swelling or aggregation of cells in the body, especially an abnormal one the area feels firm but has irregular nodules which can be painful to touch laparotomy showed white nodules in the liver
   • ▪ a swelling on a root of a leguminous plant, containing nitrogen-fixing bacteria.
   • 2. a small rounded lump of matter distinct from its surroundings, for example, of flint in chalk, carbon in cast iron, or a mineral on the seabed flint nodules in the coal pits nodules of iron ore were mined