MCC

Maximum continuous current or the minimum �rated load amp� value that may be used to comply with U.L. and N.E.C. requirements which the motor compressor protection system will not permit a continuous current in excess of 156% of the rated load amp.

Melting

The phase change of ice into liquid water.

Mixing ratio

The mass of water vapor in a parcel divided by the mass of the dry air with in that parcel (not including water vapor)

Multi Trace Minerals

Micro-minerals or trace elements to include amounts of iron, cobalt, chromium, copper, iodine, manganese, selenium, zinc, and molybdenum. These are dietary minerals needed by the human body in very small quantities (generally less than 100mg/day) as opposed to macro-minerals which are required in larger quantities. Note that the use of the term “mineral” here is distinct from the usage in the geological sciences.