noun
- a small, dense region within the nucleus of a cell where ribosomal RNA is synthesized
Usage: biology
Examples
- The nucleole is clearly visible under high magnification.
- Scientists studied the nucleole’s role in protein synthesis.
- The nucleole disappears during cell division.
- Researchers found abnormal nucleoles in the cancer cells.
- The nucleole contains both RNA and proteins.
- Multiple nucleoles can be present in a single nucleus.