Dreams of atoms or molecules refer to the importance of small aspects of your life, and to the need to pay attention to details or the little things that are being overlooked. An atom bomb in your dream may be a symbol of the end of one way of life and the beginning of another. It may also represent fear of the irrational forces of life and feeling at the mercy of external and uncontrollable forces, or a lack of compassion and a disregard for life.
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