radicals

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
  2. noun an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule that has lost an electron and will stabilize itself by stealing an electron from a nearby molecule
  3. noun a person who has radical ideas or opinions

Synonyms

group, radical, chemical group

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