noun: Initialism of mental health. [One's emotional well-being, especially with reference to one's outlook on life, ability to cope with stress or the absence of a mental disorder.]
noun: Abbreviation of methylhydrazine. [(organic chemistry) A hydrazine with an additional methyl group.]
adjective: (philately) Initialism of mint, hinged. [(with condition) Like new.]
noun: (jargon, social media) Initialism of mental health. [One's emotional well-being, especially with reference to one's outlook on life, ability to cope with stress or the absence of a mental disorder.]
