MAJOR n.
w), an offense of a greater degree which contains a lesser offense, as murder and robbery include assault. -- Major premise (Logic), that premise of a syllogism which contains the major term. -- Major scale (Mus.), the natural diatonic scale, which has semitones between the third and fourth, and seventh and fourth, a…
MEDIASTINE; MEDIASTINUM n.
A partition; a septum; specifically, the folds of the pleura (and the space included between them) which divide the thorax into a right and left cavity. The space included between these folds of the pleura, called the mediastinal space, contains the heart and gives passage to the esophagus and great blood vessels.…
MEDULLA n.
long medulla] (Anat.), the posterior part of the brain connected with the spinal cord. It includes all the hindbrain except the cerebellum and pons, and from it a large part of the cranial nerves arise. It controls very largely respiration, circulation, swallowing, and other functions, and is the most vital part of the…
METAL n.
f bismuth with lead, tin, or cadmium. -- Heavy metals (Chem.), the metallic elements not included in the groups of the alkalies, alkaline earths, or the earths; specifically, the heavy metals, as gold, mercury, platinum, lead, silver, etc. -- Light metals (Chem.), the metallic elements of the alkali and alkaline eart…