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harmless substance JUST WRITTEN FOR YOU

/hɑrmˈlɛs səbˈstæns/ · harm.less.sub.stance
noun
  1. A substance that is not capable of causing harm or injury to living organisms or the environment. The doctor assured the patient that the medication was a harmless substance and would not have any adverse effects.
noun
  1. A substance that is not toxic or poisonous, and can be handled or ingested without risk of harm. The harmless substance used in the laboratory experiment was a mixture of baking soda and water.
Did you know? The concept of harmless substances is crucial in various fields, including medicine, chemistry, and environmental science, where the identification and handling of non-toxic substances are essential for ensuring public safety and protecting the environment.
Written by Lexi Wordsworth, Dictionary Editor 0 lookups Added Jul 17, 2026