idioblast
/ˈɪdiəˌblæst/
noun
- A plant cell that is different from the cells around it, often containing crystals, oil, or other substances.
- Under the microscope, the idioblast stood out because it contained a large crystal.
- Botany students learned to identify idioblasts by their unusual shape and contents.
- The leaf's idioblasts store bitter compounds that deter insects.