- Symbol for the metallic element mercury. The abbreviation "mm Hg" means millimeters of mercury, the height of a column of mercury, as in a blood pressure reading. Mercury is poisonous to people. See Mercury poisoning.
* * ** * *hand grip; herpes gestationis; Heschl's gyrus; high glucose; human gonadotropin; human growth; hypoglycemia
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* * *mercury (L. hydrargyrum).
Medical dictionary. 2011.