Mo´lar (L. mo´la, a mill). The name applied to the three back teeth of each side of the jaw; the grinders, or mill-like teeth.
Mo´tor (L. mo´veo, mo´tum, to move). Causing motion; the name of those nerves which conduct to the muscles the stimulus which causes them to contract.
Mu´cous Membrane. The thin layer of tissue which covers those internal cavities or passages which communicate with the external air.
Mu´cus. The glairy fluid which is secreted by mucous membranes, and which serves to keep them in a moist condition.
My-o´pi-a (Gr. μύω, muo, to contract, and ὤψ, ops, the eye). A defect of vision dependent upon an eyeball that is too long, rendering distant objects indistinct; near-sight.
Na´sal (L. na´sus, the nose). Pertaining to the nose; the nasal cavities contain the distribution of the special nerve of smell.
Nerve (Gr. νεῦρον, neuron, a cord or string). A glistening, white cord of cylindrical shape, connecting the brain or spinal cord with some other organ of the body.
Nerve Cell. A minute, round and ashen-gray cell found in the brain and other nervous centres.
Nerve Fi´bre. An exceedingly slender thread of nervous tissue found in the various nervous organs, but especially in the nerves; it is of a white color.
Nu-tri´tion (L. nu´trio, to nourish). The processes by which the nourishment of the body is accomplished.