The refrigerant flows through the coils on the back or under the freezer and through an expansion valve to the inside of the freezer. As the refrigerant passes through the expansion valve the pressure drops and hence the temperature also drops.
The noun MM has 1 sense: 1  1. a metric unit of length equal to one thousandth of a meter. 2  Meaning: 3  A metric unit of length equal to one thousandth of a meter. 4  Classified under: 5  Nouns denoting quantities and units of measure. 6  Synonyms: 7  millimeter; millimetre; mm. 8  Hypernyms (mm is a kind of...):
3 Answers. , Use slang (a little). Mmk is the abbreviation for the mumble (the sound mmm...) and the abbreviation for okay (which is k). So you get the term MMK, or more appropriately Mmk, which is used for signifying distracted approval. Reference - UrbanDictionary (mmk)