Definition of "tracheid" 
- (noun) A cell in the xylem of vascular plants.
Use "tracheid" in a sentence
- "Dendroclimatic analysis of tree-ring width, tracheid dimension and wood density variations in conifers along the regional temperature gradient (the Yenisey Meridian)."
- "It positively influences tracheid production and explains up to 70% of the variability in tree-ring width."
- " A vessel differs from a tracheid in being composed of several cells placed end to end, the partitions being wholly or partially absorbed, so as to throw the cells into close communication."