The practice or science of measuring density, particularly of liquids using specialized instruments.
From densimeter + -y suffix (forming abstract nouns). The suffix -y comes from Latin and Greek, used to create nouns describing fields of study, conditions, or practices.
Densimetry was the original way brewers, distillers, and oil refineries controlled their products—by measuring density, they could tell the alcohol content, purity, and quality without modern chemistry equipment.
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