Pressure-treated
[presh-er-tree-tid] /ˈprɛʃ ərˌtri tɪd/
adjective
1.
(of wood) treated with a chemical or chemicals applied under pressure to reduce such problems as insect infestation, decay, and rotting.
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[presh-er-vak-yoo-uh m, -yoom] /ˈprɛʃ ərˈvæk yu əm, -yum/ noun 1. a valve for relieving a sealed tank of any pressure or vacuum exceeding acceptable limits.
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noun 1. the welding together of two objects by holding them together under pressure.