Definitions from Wiktionary ( )

▸ noun:  The core, central part of something, around which other elements are assembled.
▸ noun:  An initial part or version that will receive additions.
▸ noun:  (chemistry, physics) The massive, positively charged central part of an atom, made up of protons and neutrons.
▸ noun:  (cytology) A large membrane-enclosed organelle found in eukaryotic cells which contains genetic material.
▸ noun:  (neuroanatomy) A ganglion, cluster of many neuronal bodies where synapsing occurs.
▸ noun:  (phonetics, phonology) The central part of a syllable, most commonly a vowel.





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