Hardboard, also called high-density fiberboard, not to be confused with Hardwood, is a type of fiberboard, which is an engineered wood product. It is similar to particle board and medium-density fiberboard, but is denser and much stronger and harder because it is made out of exploded wood fibers that have been highly compressed. Consequently, the density of hardboard is 31 lbs.
OmegaWiki Dictionary
Ω
hardboard Building material of boards of pressed fibres.
