bifolium
English
Etymology
From
bi-
+
folium
.
Pronunciation
Audio
(
US
)
:
(file)
Noun
bifolium
(
plural
bifolia
)
(
geometry
)
A
quartic
plane curve
whose
equation
in
Cartesian coordinates
is
(
x
2
+
y
2
)
2
=
a
x
2
y
{\displaystyle (x^{2}+y^{2})^{2}=ax^{2}y}
.