tracheid

A dead, water-conducting cell in the xylem of vascular plants, having tapered ends and pits in the cell wall but lacking the perforations found in a vessel element.

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.

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

A tracheid cell.

long tubular cell peculiar to xylem