subnuclear

/sʌbˈnuːkliər/
adjective
  1. Relating to or being smaller than an atomic nucleus; describing particles or processes within the nucleus of an atom.
    • Physicists study subnuclear particles like quarks and gluons.
    • Subnuclear physics explores the fundamental building blocks of matter.
    • The lab's new accelerator allows researchers to observe subnuclear interactions.
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