The more likely source of this name is the Sanskrit word Nayati, which means leader, or possibly the Sanskrit word Nahyati, which means binds and is used in yoga. Hindi and Sanskrit names are frequently mistaken for Native American names by baby book authors because they are identified as Indian..) The word/name is supposed to have some long meaning, like power of the moon or she dances lightly through the forest.. Native American words tend to be longer, not shorter, than English words.
Antacids work by counteracting (neutralising) the acid in your stomach. They do this because the chemicals in antacids are bases (alkalis) which are the opposite of acids. A reaction between an acid and base is called neutralisation. This neutralisation makes the stomach contents less corrosive.
An antacid is a substance which neutralizes stomach acidity, which in turn relieves heartburn.