A meniscus is the curved surface of a liquid..
A concave meniscus curves downwards, with the middle being lower than the sides.
A convex meniscus curves upwards, with the mi…ddle being higher than the sides. (MORE)
I am not quite sure what the meniscus is in math, but I do know what it is defined as when related to science. The meniscus when talking about science is the curve in a flask …or other measuremnt jar in the metric system of the liquid. (the curve of the liquid wether it be up or down is the meniscus, although it is more commonly seen going in a downwards direction) (MORE)
Meniscus is not composed of anything its a physical properties due to surface tension of liquids. It is dependant on the: cohesive forces - binds similar molecules together. a…dhesive forces - bind a substance to a surface. Water for example in a glass tube the meniscus is U-shaped, we say, that the adhesive forces between the water and glass are greater, than the cohesive forces between water molecule, but for mercury, the meniscus is curved downward therefore we would say ..... One other thing in narrow tubes the rise of liquids is called capillary action. (MORE)
When a LIQUID is kept in a beaker or any apparatus in cylindrical shape the lower level of the liquid is called as meniscus level of the liquid. Eg:- when we test normality of… a base or a acid in a burette or in a pipette meniscus level of the liquid decides the normality of the respective acid or base. (MORE)