[ fuh-roh-nid ]

  1. any member of the invertebrate phylum Phoronida, wormlike marine animals living in a chitinous tube and having an anterior structure bearing ciliated tentacles for feeding.

  1. belonging or pertaining to the phoronids.

Origin of phoronid

<New Latin Phoronida, equivalent to Phoron(is) name of genus (<Latin: a name of Io) + -ida neuter plural noun suffix; see -id2

Words Nearby phoronid Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Scientific definitions for phoronid


[ fə-rōnĭd ]

  1. Any of various small, mostly solitary, wormlike marine invertebrates of the phylum Phoronida. As adults, phoronids live in the ocean floor in a tube that they secrete made of chitin. They have a U-shaped digestive tract and feed by filtering food particles with a ciliated structure called a lophophore. The larvae of phoronids are very different in appearance and are free-swimming. Phoronids are thought to be related to the brachiopods and bryozoans.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.