The
vesica piscis is a type of
lens, a mathematical
shape formed by the
intersection of two
disks with the same radius, intersecting in such a way that the center of each disk lies on the perimeter of the other.
[1] In
Latin, "vesica piscis" literally means "bladder of a
fish", reflecting the shape's resemblance to the conjoined dual air bladders ("
swim bladder") found in most fish. In
Italian, the shape's name is
mandorla ("
almond").
-Wikipedia-