Science. 1  Chara (alga), a genus of algae in the family Characeae. 2  Chara (moth), a genus of moths in the family Noctuidae. 3  CHARA array, a telescope.  Beta Canum Venaticorum or Chara, a 1  star. Chara or Southern dogs, a constellation including Beta Canum Venaticorum and Cor Caroli.
/mesoÂ·theÂ·liÂ·um/ (-theÂ´le-um) the layer of cells, derived from mesoderm, lining the body cavity of the embryo; in the adult, it forms the simple squamous epithelium that covers all true serous membranes (peritoneum, pericardium, pleura).mesotheÂ´lial.
Membranes are sheets of tissue that cover or line surfaces or separate organs or parts (lobes) of organs from each other. Many membranes provide specialized secretions. The two major categories of membranes are epithelial (serous and mucus) and connective tissue. Membrane is a term that has more than one meaning. For example, at the cellular level, membranes are lipid bilayers that restrict the passage of ions and other solutes.