nodule

nodule
noun
  1. a small swelling or aggregation of cells in the body, especially an abnormal one
    小结节,小瘤
    ■(一般作 root nodule)a swelling on a root of a leguminous plant, containing nitrogen-fixing bacteria
    (豆科植物的)根瘤
  2. a small rounded lump of matter distinct from its surroundings, e.g. of flint in chalk, carbon in cast iron, or a mineral on the seabed
    (矿物)结核,小圆块
派生
nodular
adjective
nodulated
adjective
nodulation
noun
nodulose
adjective
nodulous
adjective
语源
  1. late Middle English: from Latin nodulus, diminutive of nodus 'knot'
英语宝典
考试词汇表