The word "retemucosum," which refers to the mucous membrane lining the retina, is pronounced [rɛtəmjuːˈkəʊsəm]. The "re" prefix indicates "again," while "tenuis," "thin," is a reference to the retinal membrane's delicate nature. "Mucosum" refers to the presence of mucus-secreting cells in the membrane. The word's spelling is reflective of its Latin roots, with "re" representing a prefix meaning "again" and "mucosum" referencing mucus. The IPA transcription assists in accurately rendering the word's sound for pronunciation.
In anat., the soft under layer of the epidermis or scarfskin, which gives the colour to the skin.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.