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
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