different between aperture vs trench

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

Borrowed into Middle English from Old French trenche.

Pronunciation

• IPA^(key): /t??nt?/
• Rhymes: -?nt?

Noun

trench (plural trenches)

1. A long, narrow ditch or hole dug in the ground.
2. (military) A narrow excavation as used in warfare, as a cover for besieging or emplaced forces.
3. (archaeology) A pit, usually rectangular with smooth walls and floor, excavated during an archaeological investigation.
4. (informal) A trench coat.
   • 1999, April 24, Xiphias Gladius <[email protected]>, "Re: trenchcoat mafia", ne.general.selected, Usenet:

     I was the first person in my high school to wear a trench and fedora constantly, and Ben was one of the first to wear a black trench.

   • 2007, Nina Garcia, The Little Black Book of Style, HarperCollins, as excerpted in Elle, October, page 138:

     A classic trench can work in any kind of weather and goes well with almost anything.

Derived terms

Related terms

• tranche

Translations

Verb

trench (third-person singular simple present trenches, present participle trenching, simple past and past participle trenched)

1. (usually followed by upon) To invade, especially with regard to the rights or the exclusive authority of another; to encroach.
   • 1640, Ben Jonson, Underwoods, page 68:

     Shee is the Judge, Thou Executioner, Or if thou needs would'st trench upon her power, Thou mightst have yet enjoy'd thy crueltie, With some more thrift, and more varietie.

   • 1832, Isaac Taylor, Saturday Evening

     Does it not seem as if for a creature to challenge to itself a boundless attribute, were to trench upon the prerogative of the divine nature?

   • 1949, Charles Austin Beard, American Government and Politics, page 16:

     He could make what laws he pleased, as long as those laws did not trench upon property rights.

   • 2005, Carl von Clausewitz, J. J. Graham, On War, page 261:

     [O]ur ideas, therefore, must trench upon the province of tactics.

2. (military, infantry) To excavate an elongated pit for protection of soldiers and or equipment, usually perpendicular to the line of sight toward the enemy.

   • Advanc'd upon the field there stood a mound
     Of earth congested, wall'd , and trench'd around

3. (archaeology) To excavate an elongated and often narrow pit.
4. To have direction; to aim or tend.
   • 1612, Francis Bacon, Of Judicature

     the reason and consequence thereof may trench to point of estate

5. To cut; to form or shape by cutting; to make by incision, hewing, etc.
6. To cut furrows or ditches in.

7. To dig or cultivate very deeply, usually by digging parallel contiguous trenches in succession, filling each from the next.

French

Etymology

From English.

Pronunciation

• IPA^(key): /t??nt?/

Noun

trench m (plural trenchs)

1. trench coat

Italian

Etymology

From English trench coat.

Noun

trench m (invariable)

1. trench coat