pindaktiivne aine
a substance which lowers the surface tension of the medium in which it is dissolved, and/or the interfacial tension with other phases, and, accordingly, is positively adsorbed at the liquid/vapour and/or at other interfaces, aine, mis adsorbeerub faaside (näiteks vedelik – tahke aine) eralduspinnale ja vähendab selle pinnaenergiat (näiteks seep)
