Meaning of favellidium

fav•el•lid•i•um

Pronunciation: (fav"u-lid'ē-um), [key]
— pl. -lid•i•a
  1. (in certain red algae) a cystocarp wholly or partly immersed in a frond.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.