Definition of nucleus

Definition of nucleus
  1. nucleus Noun The core, central part (of something), round which others are assembled.
  2. nucleus Noun An initial part or version that will receive additions.
  3. nucleus Noun The massive, positively charged central part of an atom, made up of protons and neutrons.
  4. nucleus Noun A large organelle found in cells which contains genetic material.
  5. nucleus Noun A ganglion, cluster of many neuronal bodies where synapsing occurs.
  6. nucleus Noun The central part of a syllable, most commonly a vowel.
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