Let's Compare Mucosa and Serosa. 1  MUCOSA VS.  Mucosa. The mucous membranes (or mucosae or mucosas; singular mucosa) are linings of mostly endodermal origin, covered in epithelium, which are involved in absorption and secretion. mucosa \mucosa\ n.
Definition of dropper for English Language Learners. : a glass or plastic tube that is used to measure out liquids by drops.
A schlepper is one who schleps, as above stated. A shiksa is a non-Jewish girl or woman, and in Jewish circles, it is not really offensive, but was taken to be at one point and now everyone thinks it is.