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Definition of Tracheid
1. Noun. Long tubular cell peculiar to xylem.
Definition of Tracheid
1. n. A wood cell with spiral or other markings and closed throughout, as in pine wood.
Definition of Tracheid
1. Noun. (botany) A tracheid cell. ¹
¹ Source: wiktionary.com
Definition of Tracheid
1. a long, tubular plant cell [n -S]
Medical Definition of Tracheid
1. Water conducting cell forming part of the plant xylem. Contains thick, lignified secondary cells walls, with no protoplast at maturity. Interconnects with neighbouring tracheids through pits, the end walls are not perforated. Compare: vessel elements. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)