Толковый словарь английского языка - smectic

adjective Etymology: Latin ~us cleansing, having the properties of soap, from Greek smēktikos, from smēchein to clean Date: 1923 of, relating to, or being the phase of a liquid crystal characterized by arrangement of molecules in layers with the long molecular axes in a given layer being parallel to one another and those of other layers and perpendicular or slightly inclined to the plane of the layer