An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 912
actor
  ژیرنده   
žirandé

Fr.: acteur   

1) One who takes part; a participant.
2) A theatrical performer.

From → act + → -or.

Žirandé adj./noun from žir, → act + suffix -andé. Žirmand, from žir + mand.

actual
  ژیروند   
žirvand

Fr.: actuel   

1) Existing in act or fact; real.
2) Philosophy: The character of what is realized in act (such as a statue), as opposed to what can potentially be realized (from a piece of rock).

M.E. actuel, from O.Fr. actuel "now existing, up to date," from L. actualis "active, pertaining to action," adj. form of actus, → act.

Žirvand, from žir, → act, + -vand a suffix forming adjectives denoting "possessed of, similarity, relation," variants -âvand, -van (e.g. xodâvand "possessor, master," pulâdvand "hard as steel, name of a hero," dowlatvand "rich," setarvan "mule-like, barren," polvan "bridge-like, a raised path"), from Mid.Pers. -âwand (hunarâwand "skilled," warzâwand "powerful"); Av. -vant (aurvant- "swift," surunvant- "audible"); cf. Skt. -vant (amavant- "having attacking power").

actuality
  ژیروندی   
žirvandi

Fr.: actualité   

1) The quality or state of being actual or something that is actual; reality.
2) Philosophy: According to Aristotle, what has → form and can causally interact with other things, as opposed to → potentiality.

actual; → -ity.

actualization
  ژیروندش، ژیروند‌کرد   
živandeš, živandkard

Fr.: actualisation   

The act or process of actualizing.

Verbal noun of → actualize; → -tion.

actualize
  ژیروندیدن، ژیروند کردن   
živandidan, živand kardan

Fr.: actualiser   

To make actual or real; turn into action or fact.

actual; → -ize.

actuate
  برژیریدن   
baržiridan

Fr.: actionner, déclencher   

1) To put into mechanical action or motion.
2) To incite or move to action; motivate.

From L. actuatus, p.p. of actuare, from actus, → act.

Baržiridan, from bar- "on, upon, up," → on-, + žiridan "to → act."

actuation
  برژیرش   
baržireš

Fr.: actionnement, déclenchement   

The act or process of putting into action; activation.

Verbal noun of → actuate.

actuator
  برژیرگر   
baržirgar

Fr.: actuateur   

A mechanism to activate process control equipment by use of pneumatic, hydraulic, or electronic signals.

actuate; → -or.

acuity
  تیزنایی   
tiznâyi (#)

Fr.: acuité   

Sharpness; acuteness; keenness of perception.

M.E., from M.Fr. acuité, from M.L. acuitatem (nom. acuitas) "sharpness," from L. acus "needle," acuere "to sharpen," from PIE root *ak- "be sharp."

Tiznâ "sharpness," from tiz, "→ sharp," + -nâ, a suffix that transforms adjective into noun (compare with tangnâ, derâznâ, farâxnâ, etc.).

acuity of vision
  تیزنایی ِ دید   
tiznâ-ye did

Fr.: acuité visuelle   

The ability of the → eye to see separately two points close to each other. It is a measure of the → resolving power of the eye's → optical system and depends on the density of cells in the → retina. The maximum acuity of the normal human eye is around 0.5 minutes of arc.

acuity; → vision.

ad hoc
  پدیم   
pad im

Fr.: ad hoc   

For the specific purpose at hand, as opposed to a general solution; also, by extension, improvised or impromptu.

From L. ad "to, with, in," cf. Skt. adhi "near," PIE *ad- "to, near, at."

Pad im, from Mid.Pers. pad "to, at, for, in" (Mod.Pers. "to, for, in, on, with, by"); O.Pers. paity "agaist, back, opposite to, toward, face to face, in front of;" Av. paiti "to, toward, in, at;" cf. Skt. práti "toward, against, again, back, in return, opposite;" Pali pati-; Gk. proti, pros "face to face with, toward, in addition to, near;" PIE *proti) + Mid.Pers. im "this;" from Old.Pers./Av. ima "this;" Skt. imá; cf. Lori (Laki) im "this side." The Mid.Pers. im occurs in Mod.Pers. as em- in emruz "today," emšab "tonight," and emsâl "this year."

ad hoc hypothesis
  انگاره‌ی ِ پدیم   
engâre-ye pad im

Fr.: hypothèse ad hoc   

Addition of adjustments to a theory to save it from being falsified by compensating for anomalies not anticipated by the theory in its unmodified form. Theories that rely on continual, ad hoc adjustments are distrusted.

ad hoc; → hypothesis.

ad hominem
  پد مرت   
pad mart

Fr.: ad hominem   

A fallacious objection to an argument or factual claim by appealing to a characteristic or belief of the person making the argument or claim, rather than by addressing the substance of the argument or producing evidence against the claim (wiktionary).

Literally "to a man," from → ad- "to," + hominem, accusative of homo "man," → human.

Pad mart, literally "to a man," from pad "to," → ad hoc, + mart, → man.

ad-
     

Fr.: ad-   

Prefix meaning "to, toward, addition to, near," from L. ad "to, toward." It is modified to ac- or af- or ag- or al- etc. according to the following consonant.

Cognate with E. at, from O.E. æt "near, by, at"; compare with O.N., Goth. at, O.Fris. et, O.H.G. az, Skt. adhi "near," PIE *ad- "to, near, at".

adapt
  نیاویدن   
niyâvidan

Fr.: adapter, s'adapter   

To make suitable to or fit for a specific use or situation.

From M.Fr. adapter, from L. adaptare "adjust," from ad- "to" + aptare "join," from aptus "fitted."

Niyâvidan from Mid. Pers. niyâw "apt, suitable, appropriate" + -idan verb making suffix.

adaptable
  نیاویدنی، نیاوش‌پذیر   
niyâvidani, niyâveš-pazir

Fr.: adaptable   

Capable of adapting or of being adapted.

adapt + → -able.

adaptation
  نیاوش   
niyâveš

Fr.: adaptation   

1) The act or process of adapting.
2) The state of being adapted.

adapt.

adaptation of the eye
  نیاوش ِ چشم   
niyâveš-e cašm

Fr.: adaptation de l'oeil   

Physiological process whereby the eye adjusts its sensitivity for different levels of illumination.

adaptation, → eye.

adapter
  نیاوگر، نیاونده   
niyâvgar, niyâvandé

Fr.: adaptateur   

1) General: One that adapts.
An appliance for connecting objects of different sizes or designs in an apparatus.
2) Astro.: A device that allows an observing instrument (imaging camera, spectrograph) to be mounted on a focus (e.g. Cassegrain) of a telescope.

adapt + → -er.

adaption
  نیاوش   
niyâveš

Fr.: adaptation   

Same as → adaptation.

adaptation.

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