Lava is the extrusive equivalent of magma. Magma (from Greek Î¼Î¬Î³Î¼Î±, thick unguent) is a mixture of molten or semi-molten rock, volatiles and solids that is found beneath the surface of the Earth, and is expected to exist on other terrestrial planets. Besides molten rock, magma may also contain suspended crystals, dissolved gas and sometimes gas bubbles.
Mean opinion score. Mean opinion score (MOS) is a measure used in the domain of Quality of Experience and telecommunications engineering, representing overall quality of a stimulus or system. It is the arithmetic mean over all individual âvalues on a predefined scale that a subject assigns to his opinion of the performance of a system qualityâ.
It is just another name for military job. In the Marine Corps, the MOS is a four digit number that represents the kind of job you are assigned. The first two digits are the category of your job, and the last two digits are the specific job title. So for a MOS of 0331, the 03 means that you are Infantry, and the 31 means you are a machine gunner.