noun
- A small accessory nucleus or body found in the cytoplasm of certain cells, particularly in developing sperm cells.
Usage: biology; technical; rare in general English; primarily used in scientific contexts
Examples
- The nebenkern is visible under the electron microscope in maturing spermatids.
- During spermiogenesis, the nebenkern plays a role in organizing cytoplasmic components.
- Researchers observed the nebenkern as a distinct structure in the developing sperm cell.