Definition: NMDSC20 is a short form for "New Master Duct Syndrome." It's commonly used in medical jargon to describe specific diseases or conditions where the use of an advanced, specialized duct system is necessary, such as chronic obstructive pulmonary disease (COPD) or severe asthma. The term comes from "nudity and mendacity" in Norse mythology, which implies that the system might be causing a state of distress.
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