This standard defines terms used in the field of soil quality. The terms are classified under the following mainheadings: - general terms and definitions (terms relating tosoil, to soil materials, to land and sites); - description of soil (soil characteristics, soil water,properties of soils and substances, processes insoil, contamination, background content); - sampling (general terms and definitions, sampletypes/sampling type, sampling stages, executionof sampling, quality control samples, samplepretreatment, terms and definitions related togeostatistics); - terms and definitions relating to the assessmentof soils (quality, assessment of soil and siteswith respect to risk, hazard and exposure, soilprotection); - remediation (general terms and definitions,principal remediation types, engineering-basedmethods, process-based treatment methods). An alphabetical index is provided.