Definition of "tracheid" []

• A cell in the xylem of vascular plants. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "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."
• "[9] 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."