Definisi : adj 1. of, rel to the natural world, alam sekitar, persekitaran: ~ pollutants, bahan cemar alam sekitar; 2. of, caused by o’s surroundings, persekitaran: many ~ factors must be considered when dealing with these children, banyak faktor persekitaran yg mesti diambil kira apabila menghadapi kanak-kanak ini. (Kamus Inggeris-Melayu Dewan)