(pathology) During pregnancy, a premature rupture in which amniotic fluid is discharged from the uterus and vagina putting encumbent infant at risk for infection.

(anatomy) A thin membrane that secretes serum lining an internal body cavity, such as the peritoneum, the pericardium, and the pleura.

(anatomy) A membrane which secretes mucus. It forms the lining of various body passages that communicate with the air, such as the respiratory, genitourinary, and alimentary tracts including the mouth, nasal passages, vagina and urethra.

A transparent protective fold of skin acting as an inner eyelid in birds, reptiles and some mammals.

(anatomy) A thin membrane that lines the ligamentous surfaces of joint capsules, tendon sheaths where free movement is necessary, and bursae; it is composed of dense connective tissue and secretes synovial fluid.

(cytology) The semipermeable membrane that surrounds the cytoplasm of a cell.

(chemistry, physics) any of several processes for separating the components of mixtures by using thin barriers between two miscible fluids; any transmembrane force leads to preferential transport of one or more feed components

(physics, chemistry) a separation method in which a nonwetting, microporous membrane is used with a liquid feed phase on one side of the membrane and a condensing, permeate phase on the other

plural of cell membrane

plural of mucous membrane