Meniscus
Definition: The curved upper surface of a column of liquid in a container. The surface is concave if the molecules of the liquid are attracted to the container walls and convex if they are not.


http://dictionary.reference.com/browse/Meniscus
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Kid definition: The curved surface of the water or any other liquid in the liquid where the sides meet the container.

Example:

ConcaveMeniscusContactAngle.gif

This has a concave curve, which is the meniscus.
ConvexMeniscusContactAngle.gif
This has a convex curve, which can also be the meniscus.
Non-Example:

Meniscus_Non_Example.JPG


How to Remember the Word: The way you can remember what a meniscus is, is if you see a curve in a test tube that that’ll be the meniscus.
Voki Sentence: As you see in test tubes there is a curve at the top of the liquid in a convex or concave way, this is called the meniscus.


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Synonyms: There are no synonyms