sy·​con | \ ˈsīˌkän \

Definition of sycon

1 capitalized : a genus of calcareous sponges (family Sycettidae) having typical sycon structure
2 plural -s
a : any sponge of the genus Sycon
b : a sponge or sponge larva in which the flagellated layer is restricted to more or less tubular outpouchings of the paragastric wall that are indirectly connected with the incurrent canals through lateral pores — compare ascon, leucon

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.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Other Words from sycon

syconoid \ ˈsīkəˌnȯid \ adjective or noun

History and Etymology for sycon

New Latin, from Greek sykon fig

Keep scrolling for more

Learn More about sycon

Statistics for sycon

Cite this Entry

“Sycon.” Dictionary, Merriam-Webster, Accessed 26 Feb. 2020.

Comments on sycon

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


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

More Confusing Words—Quiz

  • cats on impossible timber
  • The magician ______ moved the selected card to the top of the deck.
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!