noun \ˈkōn\

: a shape that has a pointed top and sides that form a circle at the bottom

: a hard and dry part that is the fruit of a pine tree or other evergreen plant and contains many seeds

: something that looks like a cone

Full Definition of CONE

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 table
c :  a surface traced by a moving straight line passing through a fixed vertex
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
:  something that resembles a cone in shape: 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

Examples of CONE

  1. He scooped out the popcorn with a paper cone.

Illustration of CONE

Origin of CONE

Middle French or Latin; Middle French, from Latin conus, from Greek kōnos
First Known Use: 1545



Definition of CONE

transitive verb
:  to make cone-shaped
:  to bevel like the slanting surface of a cone <cone a tire>

First Known Use of CONE

CONE Defined for Kids


noun \ˈkōn\

Definition of CONE for Kids

:  a thin crisp cookie shaped to hold ice cream
:  a scaly structure of certain trees (as the pine or fir) that produces pollen or egg cells and seeds
:  a shape with a circular base and sides that taper evenly to a point
:  a cell of the retina of the eye that is sensitive to colored light
Medical Dictionary


noun \ˈkōn\

Medical Definition of CONE

:  a solid having a circular base and sides that slope evenly to a point
a :  any of the conical photosensitive receptor cells of the vertebrate retina that function in color vision—compare rod b :  any of a family (Conidae) of numerous somewhat conical tropical gastropod mollusks that include a few highly poisonous forms—see conus
:  a cusp of a tooth especially in the upper jaw
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