different between aperture vs furrow

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 furgh, forow, from Old English furh, from Proto-West Germanic *furh, from Proto-Germanic *furhs (compare Saterland Frisian Fuurge, Dutch voor, German Furche, Swedish fåra, Norwegian Bokmål fure), from Proto-Indo-European *per?- (“to dig”).

Compare Welsh rhych (“furrow”), Latin porca (“ridge, balk”), Lithuanian prapar?šas (“ditch”), Sanskrit ?????? (pár??na, “chasm”).

Pronunciation

• (General American) IPA^(key): /?f??o?/, /?f?o?/
• (Received Pronunciation) IPA^(key): /?f????/
• (accents without the "Hurry-furry" merger)
• (accents with the "Hurry-furry" merger)
• Rhymes: -????

Noun

furrow (plural furrows)

1. A trench cut in the soil, as when plowed in order to plant a crop.

   Don't walk across that deep furrow in the field.

2. Any trench, channel, or groove, as in wood or metal.
3. A deep wrinkle in the skin of the face, especially on the forehead.

   When she was tired, a deep furrow appeared on her forehead.

Derived terms

• furrowless
• furrowlike
• furrowy

Translations

Verb

furrow (third-person singular simple present furrows, present participle furrowing, simple past and past participle furrowed)

1. (transitive) To cut one or more grooves in (the ground, etc.).
2. (transitive) To wrinkle.
3. (transitive) To pull one's brows or eyebrows together due to concentration, worry, etc.

   Synonym: frown

Derived terms

• furrower
• furrowing
• unfurrow
• unfurrowed

Translations

See also

• plough a lonely furrow