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1. Dictionary

   nucleus

   /ˈnjuːklɪəs/

   noun

   • 1. the central and most important part of an object, movement, or group, forming the basis for its activity and growth: "the nucleus of a British film-producing industry" Similar corecentrecentral partmost important partheartnubhubmiddlemidpointeyekernelfocusfocal pointpivotcruxliterary:navelrare:omphalos
   • 2. the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass.
   • ▪ a dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material.
   • ▪ a discrete mass of grey matter in the central nervous system.
   • ▪ the solid part of a comet's head.

   Word Origin mid 17th century (denoting the solid part of a comet's head): from Latin, literally ‘kernel, inner part’, diminutive of nux, nuc- ‘nut’.

   Scrabble Points: 9

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2. en.wikipedia.org › wiki › AddictionAddiction - Wikipedia

   en.wikipedia.org › wiki › Addiction

   • Cached

   19 hours ago · Addiction is a neuropsychological disorder characterized by a persistent and intense urge to use a drug or engage in a behavior that produces natural reward, despite substantial harm and other negative consequences.

3. Videos

   • 1:58

     youtube.com

     What is the Nucleus | Nucleus Structure and Function

     21 Jan 2019

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     Cell Nucleus "Structure and Functions of Nucleus" (Detailed Series)

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     Nucleus Structure and Function | Cell Biology

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