An Etymological Dictionary of Astronomy and Astrophysics

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory



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Number of Results: 1965 Search : ion
  رایانگرش، رایانگرانش   
râyângareš, râyângarâneš


The process or state of computerizing.


  ۱) هم‌مرکزش، دبزش؛ ۲) دبزش   
1) hammarkazeš, dabzeš 2) dabzeš

Fr.: concentration   

1) The act of concentrating or the state of being concentrated.
2) Chemistry: A measure of the amount of dissolved substance contained per unit of volume in a solution.

Verbal noun from → concentrate.


Fr.: conception   

1) The act of conceiving; the state of being conceived.
2) The process of arriving at an abstract idea or belief.

Verbal noun of → conceive.

  بگرتالش، بگرتی-کرد   
begertâleš, begerti-kard

Fr.: conceptualisation   

The act or result of forming into a → concept.

conceptual + → -ize.


Fr.: conclusion   

1) The act of concluding; the end or last part.
2) Logic: Of an argument, the → sentence whose → truth is to be established.

Verbal noun of → conclude.


Fr.: concrétion   

1) The act or process of concreting or becoming substantial.
2) The state of being concreted.
3) Geology: A hard, dense mass of mineral matter that formed within a rock of a composition different from its own through the precipitation of minerals and ranging in diameter from centimeters to meters.

Verbal noun of → concrete.


Fr.: condamnation   

The act of condemning; the state of being condemned.

Verbal noun of → condemn.

cagâleš (#)

Fr.: condensation   

1) General: The act of making more dense or compact.
2) Physics: The physical process by which a vapor becomes a liquid; the opposite of → evaporation. → sublimation; → deposition.
3) Acoustics: The ratio of the instantaneous excess of density to the normal density at a point in a medium transmitting longitudinal sound waves. → rarefaction.
4) Chemistry: Chemical change in which two or more molecules react with the elimination of water or of some other simple substance.
5) Meteorology: Any process by which water vapor changes to dew, fog, or cloud.

Verbal noun from → condense; → -tion.

condensation nucleus
  هسته‌ی ِ چگالش   
haste-ye cagâleš

Fr.: noyau de condensation   

A tiny suspended particle in the → atmosphere around which → water vapor condenses to form → droplets. Condensation nuclei are usually less than about 0.001 mm in diameter and can be made of → ice, → salt, → dust, and other materials. The droplets that form can be liquid water or ice, depending on the surrounding temperature. When the number of these droplets is large enough, a cloud is visible.

condensation; → nucleus.

condensation of vapor
  چگالش ِ بخار   
cagâleš-e boxâr (#)

Fr.: condensation de vapeur   

Change of vapor into liquid. It takes place when the pressure of the vapor becomes equal to the maximum vapor pressure of the liquid at that temperature.

condensation; → vapor.


Fr.: condition   

1) Physics: The state of a physical system at a given time. Also called → physical condition.
2) Math: A premise, statement, or restriction upon which a mathematical result or consequence depends. → initial conditions; → boundary conditions.

From O.Fr. condition, from L. condicionem (nom. condicio) "agreement, situation," from condicere "to speak with, talk together," from → com- "together" + dicere "to speak," from PIE *deik- "to point out;" cf. Av. daēs- "to show; assign; make known," Skt. dis- "to show, point toward," disati "shows," Gk. deiknunai "to show," O.H.G. zeigon, Ger. zeigen "to show," E. token "indication, sign."

Butâr, from Mid.Pers. but past tense stem of butan Mod.Pers. budan "to be, become," → exist, + -âr noun suffix (as in raftâr, jostâr, goftâr, kerdâr).

  بوتاری، بوتارمند   
butâri, butârmand

Fr.: conditionnel   

1) Imposing, containing, subject to, or depending on a condition or conditions; not absolute; made or allowed on certain terms.
2a) Logic: (of a proposition) Asserting that the existence or occurrence of one thing or event depends on the existence or occurrence of another thing or event.
2b) (of a → syllogism) Containing at least one → conditional proposition as a → premise (
2c) The "if ... then" relation.

condition; → -al.

conditional introduction
  اندرهازش ِ بوتاری   
andarhâzeš-e butâri

Fr.: introduction conditionnelle   

A derivation rule that begins with an → assumption in a → subproof and allows for deriving a conditional outside the subproof. The derived conditional consists of the assumed proposition as the → antecedent and the derived conclusion in the subproof as the → consequent.

conditional; → introduction.

conditional probability
  شوانایی ِ بوتاری   
šavânâyi-ye butâri

Fr.: probabilité conditionnelle   

Of an event B in relationship to an event A, the probability that event B occurs given that event A has already occurred. The notation for conditional probability is P(B|A), read as the probability of B given A: P(B|A) = P(A ∩ B)/P(A). → Bayes' theorem.

conditional; → probability.

conditional proof
  آوین ِ بوتاری   
âvin-e butâri

Fr.: preuve conditionnelle   

A → proof in which one assumes the → truth of one of the → premises to show that if that premise is true then the → argument is → valid.

conditional; → proof.

conditional proposition
  گزاره‌ی ِ بوتاری   
gozâre-ye butâri

Fr.: proposition conditionelle   

A compound → proposition in which one → clause asserts something as true provided that the other clause is true. A conditional statement consists of two parts, a hypothesis in the "if" clause and a conclusion in the "then"clause. For instance, "If it rains, then they cancel school." It rains is the hypothesis. "They cancel school" is the conclusion. The clause following if is traditionally called the → antecedent, whereas the clause following then is called the → consequent.

conditional; → proposition.


Fr.: conduction   

The transference of energy through a body, without visible motion of any part of the body. → induction; → reduction; → subduction; → transduction.

Verbal noun from → conduct.

conduction electron
  الکترون ِ هازش   
elektron-e hâzeš

Fr.: électron de conduction   

An electron whose energy lies in the conduction band of a solid, where it is free to move under the influence of an electron field.

conduction; → electron.

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.: confédération   

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

com-; → federation.

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