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vestimentiferan

[ves-tuh-muh n-tif-er-uh n, ‐men-]
noun
  1. any of various marine tubeworms of the phylum Vestimentifera or Pogonophora, which live in upright tubes near hydrothermal vents.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018