Noun
bean curve (plural bean curves)
(mathematics) A curve with formula
x
4
+
x
2
y
2
+
y
4
=
x
(
x
2
+
y
2
)
{\displaystyle x^{4}+x^{2}y^{2}+y^{4}=x(x^{2}+y^{2})\,}
.