What is another word for sorus?
Pronunciation: [sˈɔːɹəs] (IPA) 
Sorus is a biological term that refers to a cluster of spore-bearing structures found in ferns and some other plants. While sorus is the most commonly used term for these structures, there are a few synonyms that can be used as well. One such synonym is fruitdot, which is specifically used to describe the sorus of a Polypodium fern. Another synonym is cluster cup, which is a term that can be used to describe sorus in some species of ferns. Sporangium cluster is another term that can be used in place of sorus, although it is not as commonly used. Regardless of the term used, these structures remain an important part of the reproductive process for ferns and other plants.
