pseudoscule

plural pseudoscules

1. biologyA false osculum or secondary opening which replaces the original osculum of a sponge.

   Another characteristic is the presence of a 3-6 cm wide large pseudoscule with a transparent membrane.

   2007, Naglaa M. Mohamed, Ecophysiology of Microbial Communities Associated with Marine Sponges (Ircinia Strobilina) and (Mycale Laxissima), →ISBN

   1 more example

   The height is 11 cm; the largest diameter, just below the pseudoscule, 4–6 by 9 cm; the thickness of the walls, 2–20 mm.

   2013, F. Wiedenmayer, Shallow-water sponges of the western Bahamas, →ISBN, page 107