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English to English noun
| 1 |
a part of the cell containing DNA and RNA and responsible for growth and reproduction |  | source: wordnet30
| 2 |
the positively charged dense center of an atom |  | source: wordnet30
| 3 |
a small group of indispensable persons or things |  | Example: five periodicals make up the core of their publishing program
source: wordnet30
| 4 |
(astronomy) the center of the head of a comet; consists of small solid particles of ice and frozen gas that vaporizes on approaching the sun to form the coma and tail |  | source: wordnet30
| 5 |
any histologically identifiable mass of neural cell bodies in the brain or spinal cord |  | source: wordnet30
| 6 |
the central structure of the lens that is surrounded by the cortex |  | source: wordnet30
| 7 |
A kernel; hence, a central mass or point about which matter is gathered, or to which accretion is made; the central or material portion; -- used both literally and figuratively. |  | source: webster1913
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