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nu·cle·us
 nucleus
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- pronunciation:
- nu
kli
 s
- features:
- Word Explorer
| part of speech: |
noun |
| inflections: |
nuclei, nucleuses |
| definition 1: |
the central, essential, or most active part around which other parts are grouped.
Main Street is the nucleus of the town.- synonyms:
- core, hub
- similar words:
- center, heart, kernel, marrow, navel, pith, soul
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| definition 2: |
the part of a cell that contains chromosomes, which control growth and reproduction in most living things.
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| definition 3: |
the central part of an atom, which has a positive charge.
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| related words: |
hub |
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