noun
- the stalk of a leaflet in a compound leaf
Usage: botanical
Examples
- The botanist examined the petiolule connecting each leaflet to the main rachis.
- In compound leaves, each leaflet has its own petiolule.
- The petiolule allows individual leaflets to move independently.
- She measured the length of each petiolule in the trifoliate leaf.
- The petiolule was clearly visible under the microscope.
- Damage to the petiolule can cause the leaflet to wilt.