impregnated timber

impregnated timber

[im′preg‚nād·əd ′tim·bər] (materials) Timber which has been made flame-resistant, fungi-resistant, or insect-proof by forcing into it under vacuum or pressure a flame retardant or a fungal or insect poison.

impregnated timber

Timber into which a flame retarder, insect poison, and/or fungicide has been forced under pressure.