nodule

• 名词，指小的圆形团块、结节或突起，可出现在生物学语境中（如植物上的小瘤）或矿物学中，指小的圆形矿物团块。

A noun referring to a small rounded lump, node, or protuberance, which can occur in biological contexts (such as on plants) or in mineralogy as a small rounded lump of mineral substance.

1. Small nodeB2formalmedical

   A small, rounded lump or swelling of tissue, often found in the body.

   结节

   • The doctor discovered a small nodule on her thyroid gland.
   • A lung nodule was detected during the routine X-ray.
   • Most skin nodules are benign and require no treatment.

   同义词bumpgrowthknoblumpnodeswellingtubercle

2. Plant protuberanceC1formalscientific

   A small, rounded, wart-like outgrowth on a plant, often containing symbiotic bacteria.

   根瘤

   • The roots of the legume plant are covered in nitrogen-fixing nodules.
   • Galls and nodules can appear on leaves due to insect activity.
   • The botanist examined the nodule under a microscope.

   同义词excrescencetubercletuberosity

3. Mineral lumpC1formalscientific

   A small, rounded lump of mineral substance, typically harder than the surrounding rock or sediment.

   矿物结核

   • Manganese nodules are found on the ocean floor.
   • The geologist collected a nodule of flint from the chalk deposit.
   • Iron nodules are often present in certain sedimentary rocks.

   同义词accretionconcretiongeodelumpmass