different between cone vs aperture

English

Etymology

From Middle French cone, from Latin conus (“cone, wedge, peak”), from Ancient Greek ????? (kônos, “cone, spinning top, pine cone”)

Pronunciation

• (Received Pronunciation) IPA^(key): /k??n/
• (General American) IPA^(key): /ko?n/
• Rhymes: -??n

Noun

cone (plural cones)

1. (geometry) A surface of revolution formed by rotating a segment of a line around another line that intersects the first line.
2. (geometry) A solid of revolution formed by rotating a triangle around one of its altitudes.
3. (topology) A space formed by taking the direct product of a given space with a closed interval and identifying all of one end to a point.
4. Anything shaped like a cone.
6. The fruit of a conifer.
7. A cone-shaped flower head of various plants, such as banksias and proteas.
8. An ice cream cone.
9. A traffic cone
10. A unit of volume, applied solely to marijuana and only while it is in a smokable state; roughly 1.5 cubic centimetres, depending on use.
11. (anatomy) Any of the small cone-shaped structures in the retina.
12. (slang) The bowl piece on a bong.
13. (slang) The process of smoking cannabis in a bong.
14. (slang) A cone-shaped cannabis joint.
15. (slang) A passenger on a cruise ship (so-called by employees after traffic cones, from the need to navigate around them)
16. (category theory) An object V together with an arrow going from V to each object of a diagram such that for any arrow A in the diagram, the pair of arrows from V which subtend A also commute with it. (Then V can be said to be the cone’s vertex and the diagram which the cone subtends can be said to be its base.)

    Hyponym: limit

17. A shell of the genus Conus, having a conical form.
18. A set of formal languages with certain desirable closure properties, in particular those of the regular languages, the context-free languages and the recursively enumerable languages.

Synonyms

• (geometry): conical surface
• (ice cream cone): cornet, ice cream cone

Derived terms

Related terms

Translations

See also

• quean
• queen

Verb

cone (third-person singular simple present cones, present participle coning, simple past and past participle coned)

1. (transitive) To fashion into the shape of a cone.
2. (intransitive) To form a cone shape.
   • 1971, United States. Congress. House Appropriations, Department of the Interior and Related Agencies Appropriations for 1972 (part 3, page 69)

     Under the old method the material coned at the bottom of the borehole and as a result it would not go under houses and buildings.

3. (frequently followed by "off") To segregate or delineate an area using traffic cones

References

Anagrams

• Coen, Econ., Noce, ceno-, coen-, cœn-, econ, econ., once

Bourguignon

Etymology

From Latin cornua.

Noun

cone f (plural cones)

1. horn

Latin

Noun

c?ne

1. vocative singular of c?nus

References

• cone in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)

Portuguese

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)1560s, from Middle French cone (16c.) or directly from Latin conus "a cone, peak of a helmet," from Greek konos "cone, spinning top, pine cone," perhaps from PIE root *ko- "to sharpen" (cognates: Sanskrit sanah "whetstone," Latin catus "sharp," Old English han "stone").

Noun

cone m (plural cones)

1. (geometry, etc.) cone (conical shape)

English

Etymology

Borrowed from Latin apert?ra (“opening”), from apertus, past participle of aper?re (“to open, uncover”), opposed to oper?re (“to close, cover”). See aperient. Doublet of overture.

Pronunciation

• (Received Pronunciation) IPA^(key): /?æp.?.t??(?)/, /?æp.?.tj??(?)/
• (US) IPA^(key): /?æp.?.t??/
• Hyphenation: ap?er?ture

Noun

aperture (plural apertures)

1. A small or narrow opening, gap, slit, or hole.
   • 1860, Samuel Hannaford, Sea and River-side Rambles in Victoria Chapter 7

     In the centre of the fleshy membrane is an aperture leading into a deep cavity, at the bottom of which is placed a prominent piston that may be retracted by muscular fibres provided for the purpose.
2. (optics) Something which restricts the diameter of the light path through one plane in an optical system.
3. (astronomy, photography) The diameter of the aperture (in the sense above) which restricts the width of the light path through the whole system. For a telescope, this is the diameter of the objective lens.

4. (spaceflight, communication) The (typically) large-diameter antenna used for receiving and transmitting radio frequency energy containing the data used in communication satellites, especially in the geostationary belt. For a comsat, this is typically a large reflective dish antenna; sometimes called an array.
5. (mathematics, rare, of a right circular cone) The maximum angle between the two generatrices.

   If the generatrix makes an angle ? to the axis, then the aperture is 2?.

Usage notes

The aperture of microscopes is often expressed in degrees, called also the angular aperture, which signifies the angular breadth of the pencil of light which the instrument transmits from the object or point viewed; as, a microscope of 100° aperture.

Derived terms

Related terms

Translations

Further reading

• aperture in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• aperture in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

French

Etymology

Borrowed from Latin apert?ra (“opening”). Doublet of ouverture.

Pronunciation

• IPA^(key): /a.p??.ty?/

Noun

aperture f (uncountable)

1. (phonetics, phonology) opening, openness, aperture

Related terms

• apéritif
• ouvrir

Further reading

• “aperture” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Italian

Pronunciation

• Rhymes: -ure

Noun

aperture f

1. plural of apertura

Anagrams

• reputare
• reputerà

Latin

Participle

apert?re

1. vocative masculine singular of apert?rus

Spanish

Verb

aperture

1. First-person singular (yo) present subjunctive form of aperturar.
2. Formal second-person singular (usted) present subjunctive form of aperturar.
3. Third-person singular (él, ella, also used with usted^?) present subjunctive form of aperturar.
4. Formal second-person singular (usted) imperative form of aperturar.