Peat is a heterogeneous mixture more or less decomposed plant (humus) material that has accumulated in a water-saturated environment and in the absence  Peatland is - land rich in peat in our free online dictionary but you are looking for one that's only in the Merriam-Webster Unabridged Dictionary. A peatland is an area with a naturally accumulated peat layer at the surface (with or without surface vegetation) According to different s this layer  The title this Bulletin poses questions about the peat ways and means reclamation and development low-lying marshy or swampy lands. The Peat and Peatland Terminology Group formed by IPS and the Unmistakable and clear s terms facilitate communication and decisions.