tra·che·ar·y element 
(trākē-ĕr′ē)
(trākē-ĕr′ē)n.
Either of two types of elongated water-conducting cells having lignified walls and found in the xylem of vascular plants; a tracheid or vessel element.
[Obsolete trachea, a water-conducting structure in xylem resembling insect tracheae; see TRACHEA + -ARY.]
- Pierre Elliott
- Pierre Esprit
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- Pierre Gaultier de Varennes.
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- Pierre Terrail.
- Pierrot
- Piet
- Pieter
- Pieter
- Pieter Cornelis Mondriaan.
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- Pieter Willem
- pietism
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