nounC1Very rare — outside the 30,000 commonest English words, so you will meet it in writing rather than in speechToo rare in one of the two pools to compare — fewer than 20 uses in speech or in writing
Reforestation is the planting of trees where forest was lost. Fund reforestation.
Planting the wrong species in the wrong place does harm, particularly on peat. Reforestation works best where the trees are allowed to seed themselves back in.