Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A cell in the xylem of vascular plants.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A tracheid cell.

from the GNU version of the Collaborative International Dictionary of English

  • n. A wood cell with spiral or other markings and closed throughout, as in pine wood.

from The Century Dictionary and Cyclopedia

  • n. In botany, a single elongated taper-pointed and more or less lignified cell, usually having upon its surface peculiar markings known as discoid markings or bordered pits, and especially characteristic of the wood of gymnosperms.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. long tubular cell peculiar to xylem

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From German Tracheïde, corresponding to trachea +‎ -id.

Examples

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