Definition of cone
1 a
: a solid generated by rotating a right triangle about one of its legs — called also
right circular cone
b
: a solid bounded by a circular or other closed plane base and the surface formed by line segments joining every point of the boundary of the base to a common vertex — see Volume Formulas Table
c
: a surface traced by a moving straight line passing through a fixed vertex
2 a
: a mass of ovule-bearing or pollen-bearing scales or bracts in most conifers or in cycads that are arranged usually on a somewhat elongated axis
b
: any of several flower or fruit clusters suggesting a cone
3
: something that resembles a cone in shape: such as
a
: any of the conical photosensitive receptor cells of the vertebrate retina that function in color vision — compare rod 3
b
: any of a family (Conidae) of tropical marine gastropod mollusks that inject their prey with a potent toxin
c
: the apex of a volcano
d
: a crisp usually cone-shaped wafer for holding ice cream
