AskDefine | Define nodule

Dictionary Definition



1 a small node
2 small rounded wartlike protuberance on a plant [syn: tubercle]
3 (mineralogy) a small rounded lump of mineral substance (usually harder than the surrounding rock or sediment)

User Contributed Dictionary



  • (UK) /ˈnɒdjuːl/, /"nQdju:l/
  • (US) /ˈnɑːʤuːl/, /"nA:dZu:l/


  1. A rounded mass or irregular shape; a little knot or lump.

Extensive Definition

A nodule describes an aggregation of similar cells or particles in a number of scientific fields:
nodule in Spanish: Nódulo
nodule in French: Nodule
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