noun
- elongated cells in the xylem of vascular plants that conduct water and provide structural support
Usage: botanical; plural form of tracheid
Examples
- Tracheids are the primary water-conducting elements in conifers.
- The walls of tracheids are reinforced with lignin for strength.
- Water moves through tracheids via pits in their cell walls.
- Tracheids differ from vessel elements in their structure and function.
- The diameter of tracheids affects water transport efficiency.
- Fossil tracheids help scientists study ancient plant evolution.