| Front | noun 1 the central and most important part of an object, movement, or group, forming the basis for its activity and growth: 2 Physics the positively charged central core of an atom that contains most of its mass. 3 Biology a dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material. 4 a discrete mass of grey matter in the central nervous system. 5 Astronomy the solid part of a comet's head. |
|---|---|
| Back | nucleus |
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Noun principle action adopted proposed organization individual policy
Previous card: Relating adjective genes heredity origin arising common genetic
Up to card list: Most common TOEFL words