It is called a centered trochoid. See Wikipedia link for more.
In geometry a straight line that touches a curve is called a tangent.
A cumulative frequency curve is a graph that shows the cumulative frequency of a data set. This type of graph can present data, such as medians and quartiles. Another name for this curve is an Ogive.
Campanology
bell foundin
The bell curve graph is another name for a normal (Gaussian) distribution graph. A Gaussian function is a certain kind of function whose graph results in a bell-shaped curve.
Gaussian distribution. Some people refer to the normal distribution as a "bell shaped" curve, but this should be avoided, as there are other bell shaped symmetrical curves which are not normal distributions.
it sounds like a high pitched bell
The name of the curve is the "meniscus".
Crest.
curve
Climax.
Beemiller
Mount Elbert.
Matty Bell's birth name is Madison A. Bell.
Monna Bell's birth name is Bell, Nora.
Nuri Bell's birth name is Nuri Bell.