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emi JUST WRITTEN FOR YOU

/ˈɛmi/ · em·i
noun
  1. A unit of measurement for the amount of radioactivity in a substance. The emi of the radioactive material was measured to be 1000 units.
prefix
  1. Used in chemistry to denote a substance that can be easily ionized. The emi- prefix is used to describe the ionizable properties of certain compounds.
Did you know? The emi unit of measurement is used in the International System of Units (SI) to quantify the activity of radioactive materials.
Written by Lexi Wordsworth, Dictionary Editor 0 lookups Added Jul 15, 2026