Relating to or characterized by atoms; having the nature or properties of atoms.
From atom (from Greek atomos, 'uncuttable') + -atic (suffix forming adjectives). The -atic suffix was added to create an adjective form describing atom-related properties.
This word is rarely used in modern science because 'atomic' took over as the standard term, but 'atomatic' shows how scientists in earlier centuries tried different word endings to describe the atomic theory—competing terminology that could have changed how we talk about physics today.
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