An Etymological Dictionary of Astronomy and Astrophysics

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory



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Number of Results: 1259
conduction band
  باند ِ هازش   
bând-e hâzeš

Fr.: bande de conduction   

In the energy spectrum of a solid, a range of energies in which electrons can move freely under the influence of an electrical field. Metals have many electrons in this range, insulators have none. In semiconductors the conduction band contains few electrons provided by impurity atoms or ejected from the valence bands by thermal energy or photon absorption.

conduction; → bande.


Fr.: conducteur   

(Adj.) Having the property or capability of conducting.

From → conduct + -ive a suffix of adj.


Fr.: conductivité   

1) General: A measure of the ability to transmit, as electricity, thermal energy, sound, and so on.
2) → electrical conductivity.
3) → thermal conductivity.

From → conductive + → -ity suffix forming abstract nouns expressing state or condition.


Fr.: conducteur   

Substance, or body, which offers a relatively small resistance to the passage of an electric current.

Agent noun from conduce, → conduct, + → -tor.

maxrut (#)

Fr.: cône   

A solid bounded by a plane and the surface generated by a straight line which always touches a simple closed curve on the plane and passes through a fixed point not on the plane.

L. conus "a wedge, peak, cone," from Gk. konos "cone, spinning top, pine cone," from PIE base *ko(n)- "to sharpen."

Maxrut from Ar.


Fr.: confédération   

A body comprising independent organizations that cooperate for a common purpose.

com-; → federation.

  خستوییدن، خستو شدن   
xastuyidan, xastu šodan (#)

Fr.: avouer   

To acknowledge or avow (a fault, crime, misdeed, weakness, etc.) by way of revelation (

M.E. confessen, from Old French confesser (transitive and intransitive), from Vulgar Latin *confessare, from Latin confess-, past participle stem of confiteri "to acknowledge," from assimilated form of com "together" (see com-) + fateri "to admit," akin to fari "speak," from PIE root *bha- (2) "to speak, tell, say."

Xastuyidan, infinitive from xastu, → confessor.


Fr.: aveu   

1) Something that is confessed.
2) Acknowledgment or disclosure of sin or sinfulness, especially to a priest to obtain absolution (

Verbal noun of → xastuyidan, "to → confess."

xastu (#)

Fr.: avouant   

A person who makes a confession.

confess; → -or.

Xastu "a person who makes a confession, confessing," from Mid.Pers. xwastûg "confessing," xwastûgih "confession;" ultimately from *xva.stavana-, from *xva- "own, one's own," + *stau- "to paray, celebrate (in songs), praise" (Pers. sotudan/setây- "to praise"); cf. Av. stau-, stû- "to praise" (āstau- "to confess"); Skt. stav- "to honour, praise;" Gk. steutai "announces solemnly, boasts."

hampeykareš (#)

Fr.: configuration   

General: Arrangement of parts or elements in a composite object.
Physics: The distribution of electrons in the various atomic orbital and energy levels.

L.L. configuration, configuratio "similar formation," from L. configurare "to form from or after," from → com- + figurare "to form," from figura "figure."

Hampeykareš (verbal noun from hampeykaridan), from ham-, → com-, + peykar "figure, form, mould, body" + noun suffix -eš. Peykar from Mid.Pers. pahikar "picture, image," from O.Pers. patikara- "picture, (sculpted) likeness," from patiy "against" (Av. paiti, Skt. prati, Gk. poti/proti) + kara- "doer, maker," from kar- "to do, make, build," Av. kar-, Skt.. kr-; cf. Skt. pratikrti- "an image, likeness, model; counterpart."

  پربستن، پربست کردن   
parbastan (#), parbast kardan (#)

Fr.: confiner   

To enclose within bounds; to restrict.

M.E., from M.Fr. confins, confines, from L. confinis "boundary, border," from con-, → com- "with" + finis "end."

Parbastan, parbast kardan, literally "close around," from par- "around," → circum-, + bast, bastan "to close," → closed.

confined plasma
  پلاسمای ِ پربسته   
pelâsmâ-ye parbasté

Fr.: plasma confiné   

Plasma in which magnetic field lines forming closed surfaces confine the plasma.

Confined, p;p. of → confine; → plasma.

parbast (#)

Fr.: confinement   

General: The act of confining; the state of being confined. Physics: A property of quantum electrodynamics whereby quarks cannot exist as free particles, but are forever bound into protons, neutrons, etc.

Noun from → confine.

  استوار کردن، ستواریدن   
ostovâr kardan (#), sotvâridan

Fr.: confirmer   

To support or establish the certainty or validity of; verify.

L. confirmare "make firm, establish," from → com- intensive prefix + firmare "to strengthen," from firmus "firm, stable," from PIE base *dher- "to hold firmly, support," cf. Skt. dharmah "status, law," Gk. thronos "seat."

Ostovâr kardan, sotvâridan from ostovâr "firm, reliable," Mid.Pers. awestwâr, ôst "firm, reliable," O.Pers./Av. sta- "to stand; set," (Av. hištaiti, cf. Skt. sthâ- "to stand," Gk. histemi "put, place, weigh," stasis "a standing still," L. stare "to stand"); PIE base *sta- "to stand."

  استواری، ستوارش   
ostovâri (#), sotvâreš

Fr.: confirmation   

The act of confirming or the state of being confirmed.

Verbal noun from → confirm.

kešmakeš (#)

Fr.: conflit   

1) A serious disagreement or argument, typically a protracted one.
2) A serious incompatibility between two or more opinions, principles, or interests (Oxford.Dictionaries).

M.E., from O.Fr. conflit and directly from L. conflictus, p.p. of confligere "to strike together, be in conflict," from → com- "together" + fligere "to strike."

Kešmakeš, literally "pulling different ways," from kešidan "to pull, carry, draw," → galaxy.


Fr.: conforme   

Math.: Of, pertaining to, or specifying a mapping of a surface upon another surface so that all angles between intersecting curves remain unchanged.

con- + → form + → -al.

conformal compactification
  همپکانش ِ همدیس   
hampakâneš-e hamdi

Fr.: compactification conforme   

A mapping of an infinite → space-time onto a finite one that may make the far away parts of the former accessible to study. The technique invented by Penrose defines an equivalence class of → metrics, gab being equivalent to ĝab = Ω2gab, where Ω is a positive scalar function of the space-time that modifies the distance scale making the asymptotics of the physical metric accessible to study.

conformal; → compactification.

conformal mapping
  همتایش ِ همدیس   
hamtâyeš-e hamdis

Fr.: application conforme   

A continuous mapping u = f(x) of a domain D in an n-dimensional Euclidean space (n≥ 2) into the n-dimensional Euclidean space is called conformal at a point x0D if it has the properties of constancy of dilation and preservation of angles at this point.

conformal; → mapping.


Fr.: confondre   

1) To throw into confusion or disorder.
2) To treat or regard erroneously as identical; mix or associate by mistake (

M.E. conf(o)unden, from Anglo-Fr. confoundre, O.Fr. confondre "throw into disorder, crush, ruin," from L. confundere "to confuse," literally "to pour together, mix, mingle," from → com- + fundere "to pour"

Pašidan, from Tâti paši "confused, blend;" ultimately from Proto-Ir. *apa-šan-, from *šan- "to shake;" cf. Mid.Pers. pašân-, afšân- "to spread, scatter;" Pers. afšândan "to disperse;" Kurd. pašiv "messy, disordered," pašukân "to be agitated, distraught;" Gilaki voršin "messy, disordered;" see → chaos for other dialectal examples.

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