noun am·phi·disk \ˈamfəˌdisk\
variants: or



Definition of amphidisk



  1. :  a spicule having a stellate disk at each end found in the reproductive bodies of freshwater sponges of the genus Spongilla and in some of the Hyalospongiae

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of amphidisk

amphi- + disk, disc

First Known Use: 1856

Seen and Heard

What made you want to look up amphidisk? Please tell us where you read or heard it (including the quote, if possible).


a trip made at another's expense

Get Word of the Day daily email!