from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A nest, especially one for the eggs of insects, spiders, or small animals.
  • n. A cavity where spores develop.
  • n. Pathology A central point or focus of bacterial growth in a living organism.
  • n. A point or place at which something originates, accumulates, or develops, as the center around which salts of calcium, uric acid, or bile acid form calculi.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A nest for insects or small animals
  • n. A locus of infection in an organism
  • n. An originating point for a phenomenon


Latin nīdus.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin nīdus ("nest") (Wiktionary)



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