Meniscus 3 : The curved upper surface of a liquid column, concave when the containing walls are wetted by the liquid and convex when not. (Bul 10C, Bul D11)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}