different between aperture vs contention

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.

English

Etymology

From Middle English contencion, borrowed from Old French contencion, from Latin contentio, contentionem, from contend? (past participle contentus); see contend.

Pronunciation

• IPA^(key): /k?n?t?n??n/
• Hyphenation: con?ten?tion

Noun

contention (countable and uncountable, plural contentions)

1. Argument, contest, debate, strife, struggle.
2. A point maintained in an argument, or a line of argument taken in its support; the subject matter of discussion of strife; a position taken or contended for.

   It is my contention that state lotteries are taxes on stupid people.

3. (computing, telecommunications) Competition by parts of a system or its users for a limited resource.

Synonyms

• gainstrife, gainstriving, wrangling

Hyponyms

• (computing) resource contention

Derived terms

• bone of contention
• contention system
• in contention
• resource contention

Related terms

Translations

References

• contention on Wikipedia.Wikipedia

Further reading

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

Old French

Etymology

Borrowed from Latin contentio, contentionem. Cf. the inherited form contençon, and see also tençon.

Noun

contention f (oblique plural contentions, nominative singular contention, nominative plural contentions)

1. dispute; quarrel; disagreement

Related terms

• contendre
• contençon
• tençon

Descendants

• English: contention
• French: contention