Something that is different in origin or composition; a substance or organism composed of fundamentally different elements or parts.
From Greek 'hetero-' (different) and '-gen' (origin/kind), literally meaning 'of different kinds.' Used in scientific contexts to describe mixed or diverse materials.
In chemistry, a heterogen describes any mixture where the different components don't dissolve into each other—like oil and water sitting stubbornly apart, refusing to become one unified substance.
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