from The Century Dictionary and Cyclopedia
- A group of sponges, Spongidæ or Porifera, exemplified by the genus Halichondria, containing many common marine forms which incrust stones, timbers, and seaweeds below the tide-mark, and sometimes shoot up into branching tufts or tubes. They have no commercial value. Also Halichondriæ.
Sorry, no etymologies found.