top: right circular cone
bottom: cones and rods of a human eye
cone
(kōn)n.
1. Mathematics
a. The surface generated by a straight line, the generator, passing through a fixed point, the vertex, and moving along a fixed curve, the directrix.
b. A right circular cone.
2.
a. The figure formed by a cone, bound or regarded as bound by its vertex and a plane section taken anywhere above or below the vertex.
b. Something having the shape of this figure: "the cone of illuminated drops spilling beneath a street lamp" (Anne Tyler).
3. Botany
a. A unisexual reproductive structure of most gymnospermous plants, such as conifers and cycads, typically consisting of a central axis around which there are scaly, overlapping, spirally arranged sporophylls that bear either pollen-containing structures or ovules.
b. A similar, spore-producing structure of club mosses, horsetails, and spikemosses.
c. A reproductive structure resembling a cone, such as the female inflorescence of a hop plant or the woody female catkin of an alder.
4. Physiology One of the photoreceptors in the retina of the eye that is responsible for daylight and color vision. These photoreceptors are most densely concentrated in the fovea centralis, creating the area of greatest visual acuity. Also called cone cell.
5. Any of various gastropod mollusks of the family Conidae of tropical and subtropical seas that have a conical, often vividly marked shell and that inject their prey with poisonous toxins, which can be fatal to humans. Also called cone shell.
tr.v. coned, con·ing, cones
To shape (something) like a cone or a segment of one.
[French cône and Middle English cone, angle of a quadrant, both from Latin cōnus, from Greek kōnos; see kō- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
cone
(kəʊn)n
1. (Mathematics)
a. a geometric solid consisting of a plane base bounded by a closed curve, often a circle or an ellipse, every point of which is joined to a fixed point, the vertex, lying outside the plane of the base. A right circular cone has a vertex perpendicularly above or below the centre of a circular base. Volume of a cone: πr2h, where r is the radius of the base and h is the height of the cone
b. a geometric surface formed by a line rotating about the vertex and connecting the peripheries of two closed plane bases, usually circular or elliptical, above and below the vertex. See also conic section
2. anything that tapers from a circular section to a point, such as a wafer shell used to contain ice cream
3. (Botany)
a. the reproductive body of conifers and related plants, made up of overlapping scales, esp the mature female cone, whose scales each bear a seed
b. a similar structure in horsetails, club mosses, etc. Technical name: strobilus
4. (Civil Engineering) a small cone-shaped bollard used as a temporary traffic marker on roads
5. (Anatomy) Also called: retinal cone any one of the cone-shaped cells in the retina of the eye, sensitive to colour and bright light
vb
(tr) to shape like a cone or part of a cone
[C16: from Latin cōnus, from Greek kōnus pine cone, geometrical cone]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
cone
(koʊn)n., v. coned, con•ing. n.
1.
a. a solid whose surface is generated by a line passing through a fixed point and a fixed plane curve not containing the point, consisting of two equal sections joined at a vertex.
b. a plane surface resembling the cross section of a solid cone.
2. anything shaped like a cone: the cone of a volcano.
4.
a. the reproductive structure of certain nonflowering trees and shrubs, as the pine, consisting of hard or papery scales bearing naked seeds and arranged in an overlapping whorl around an axis. Compare conifer.
b. a similar structure, as in cycads or club mosses.
5. one of the cone-shaped cells in the retina of the eye, sensitive to bright light and color. Compare rod (def. 11).
v.t. 6. to shape like a cone or a segment of a cone.
[1480–90; < Latin cōnus < Greek kônos pine cone, cone-shaped figure; akin to hone1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
top: The volume (V) of a cone can be calculated using the following equation: V = 1/3 πr2h.
bottom: detail of the retina showing cones and rods
cone
(kōn)1. A three-dimensional surface or solid object in which the base is a circle and the sides narrow to form a point. The surface of a cone is formed mathematically by moving a line that passes through a fixed point (the vertex) along a circle.
2. A rounded or elongated cluster of woody scales enclosing the reproductive structures of conifers such as pines, spruces, and firs. Cones are either male, producing pollen, or female, bearing seeds. Male cones are much smaller than female cones. When the seeds become mature, the female cones expand to release them.
3. One of the cone-shaped cells in the retina of the eye of many vertebrate animals. Cones are responsible for daylight vision and, in some animals, for the ability to see colors. Compare rod.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cone
a cone-like shape; used figuratively. See also cock.Examples: cone of flame, 1813; of prelacy, 1641; of rays, 1831; of shade, 1667.
Dictionary of Collective Nouns and Group Terms. Copyright 2008 The Gale Group, Inc. All rights reserved.
cone
Past participle: coned
Gerund: coning
| Imperative |
|---|
| cone |
| cone |
Collins English Verb Tables © HarperCollins Publishers 2011
ThesaurusAntonymsRelated WordsSynonymsLegend:
| Noun | 1. |  cone - any cone-shaped artifact |
| 2. |  cone - a shape whose base is a circle and whose sides taper up to a pointround shape - a shape that is curved and without sharp angles funnel, funnel shape - a conical shape with a wider and a narrower opening at the two ends | |
| 3. |  cone - cone-shaped mass of ovule- or spore-bearing scales or bractsreproductive structure - the parts of a plant involved in its reproduction fir cone - the seed-producing cone of a fir tree galbulus - the seed-producing cone of a cypress tree pinecone - the seed-producing cone of a pine tree conifer, coniferous tree - any gymnospermous tree or shrub bearing cones horsetail - perennial rushlike flowerless herbs with jointed hollow stems and narrow toothlike leaves that spread by creeping rhizomes; tend to become weedy; common in northern hemisphere; some in Africa and South America | |
| 4. | cone - a visual receptor cell in the retina that is sensitive to bright light and to color retina - the innermost light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nerve visual cell - one of the cells of the retina that is sensitive to light iodopsin - a violet photopigment in the retinal cones of the eyes of most vertebrates; plays a role in daylight vision | |
| Verb | 1. | cone - make cone-shaped; "cone a tire" |
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
قِمْعكوزكوز البوظَهمَخْرُوط
kuželšiškačípekkornout
keglekoglevaffel
kartio
stožac
tobozkúpterelõbója
keilaköngullkramarhús, ísform úr brauîivarúîarkeila
円錐形のもの
원뿔
įspėjamasis ženklaskankorėžiskaušeliskūgio formoskūgis
brīdinājuma ceļa zīmečiekurskonusskonusveida vafeļu trauciņš saldējumam
kužeľšiška
stožeckornetstorž
strutkon
กรวย
hình nón
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
Collins English/French Electronic Resource. © HarperCollins Publishers 2005
cone
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
cone
(koun) noun1. a solid figure with a point and a base in the shape of a circle or oval.
2. the fruit of the pine, fir etc. fir-cones.
3. a pointed holder for ice cream; an ice-cream cone.
4. a warning sign placed next to roadworks etc or where parking is not allowed.
conical (ˈkonikl) adjective cone-shaped.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.
cone
→ مَخْرُوط kužel kegle Kegel κώνος cono kartio cône stožac cono 円錐形のもの 원뿔 kegel kjegle stożek cone конус strut กรวย koni hình nón 锥Multilingual Translator © HarperCollins Publishers 2009
cone
n. cono, uno de los órganos sensoriales que, con los bastoncillos de la retina, facilitan la visión del color;
___ cells → ___ -s de la retina.
English-Spanish Medical Dictionary © Farlex 2012
cone
n (anat, gyn, ophthalmology, etc.) conoEnglish-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.