Wood-pulp

noun
1.
wood reduced to pulp through mechanical and chemical treatment for use in the manufacture of certain kinds of paper.
noun
1.
wood that has been ground to a fine pulp for use in making newsprint and other cheap forms of paper, and in the production of hardboard
2.
finely pulped wood that has been digested by a chemical, such as caustic soda, and sometimes bleached: used in making paper