👉 Meletian is a mathematical concept in mathematics that refers to a family of curves formed by the intersection of two conic sections, namely an ellipse and a parabola. It was introduced by the Russian mathematician Sergey Melekhin in 1980. The term "meletian" comes from the Greek word "meteorion," which means a shower or raindrop falling through the atmosphere. In this context, "meletian" refers to the shape of