ˈsīˌkän noun
Etymology: New Latin, from Greek sykon fig — more at fig
1. capitalized : a genus of calcareous sponges (family Sycettidae) having typical sycon structure
2. -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
• sy·co·noid ˈsīkəˌnȯid adjective or noun