Ovicell is a technical term that refers to a special organ found in bryozoans, which produces and houses their eggs. As with most scientific terms, it can be tricky to find synonyms that are both accurate and widely recognized. A few possible options include brood chamber, incubator, egg sac, and oötheca (which refers specifically to the egg cases of certain invertebrates). Alternately, it may be more effective to describe the function of the ovicell rather than using a specific term, such as "the organ in which bryozoans develop and protect their eggs.".