Midwife (mid'wif). A female nurse who attends women in childbirth.

Minim (min'-im). About a drop.

Mitral valves (mit'ral). The valves that control the opening from the left auricle to the left ventricle.

Morbid (mor'bid). Pertaining to disease or diseased parts.

Morbific (mor-bif 'ik). Producing disease.

Morbus (mor'bus). Disease.

Mucous Membrane (mu'kus). A membrane that secretes mucus.

Mortification (mor-tif-ik-a'shun). See gangrene.

Mucilage (mu-cil'ij). A solution of gum in water.

Mucus (mu'kus). A viscid liquid.