An Etymological Dictionary of Astronomy and Astrophysics

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory



<< < -ab ab- abo abs abs acc acc ack act acu add adi adv aff agg Ald Alf ali all alp alt Ama amp ana ang ang ann ano ant ant ape apo app app arc are Ari art asp ast ast ast Ata atm ato att aut ave axi > >>

Number of Results: 972
apparent sidereal time
  زمان ِ اختری ِ پدیدار   
zamân-e axtari-ye padidâr

Fr.: temps sidéral apparent   

The → mean sidereal time corrected for the → nutation and shift in the obliquity of the ecliptic that occurs as a result of the Moon's gravitational effect. Apparent sidereal time differs from mean sidereal time in that the → true vernal equinox point is used.

apparent; → sidereal; → time.

apparent solar day
  روز ِ خورشیدی ِ پدیدار   
ruz-e xoršidi-ye padidâr

Fr.: jour solaire vrai   

The duration of one rotation of the Earth on its axis (→ Earth's rotation), with respect to the → apparent Sun. It is measured by successive transits of the apparent Sun over the lower branch of a → meridian.

apparent; → solar day.

apparent solar time
  زمان ِ خورشیدی ِ پدیدار   
zamân-e xoršidi-ye padidâr

Fr.: temps solaire apparent   

The time based on the motion of the → apparent Sun and kept by dividing the day into 24 equal hours.

apparent; → solar; → time.

apparent Sun
  خورشید ِ پدیدار   
xoršid-e padidâr

Fr.: Soleil apparent   

The → true Sun as seen by an observer on Earth. The term "apparent Sun" is used in contrast to → mean Sun, which refers to an average of the Sun's position). See also: → apparent solar time and → mean solar time.

apparent; → Sun.

apparent visual magnitude
  برز ِ دیدگانی ِ پدیدار   
borz-e didegâni-ye padidâr

Fr.: magnitude visuelle apparente   

Apparent magnitude in the visual wavelengths, around 5600 Å. → visual magnitude.

apparent; → visual; → magnitude.


Fr.: apparemment   

Judging from what is apparent. As far as one knows or can see.

apparent; → -ly.

  پدیداری، پدیدارش   
padidâri (#), padidâreš

Fr.: apparition   

A period during which a → planet, → asteroid, or → comet is observable, generally between two successive → conjunctions of the body with the Sun.

M.E. apparicioun, from O.Fr. apparition, from L.L. appritionem "an appearance," from L. apparitus, p.p. of apparere "to appear."

Padidâri, n. from → padidâr + -i; padidâreš, verbal n. from *padidâridan.

  پدیدار شدن   
padidâr šodan (#)

Fr.: apparaître   

1) Come into sight; become visible or noticeable.
2) To have the appearance of being; seem.

From M.E. apperen, aperen, from O.Fr. aparoir, aperer, from L. apparere, from → ad- + prarere "to come forth, become visible."

Padidâr šodan, literally "become apparent," from padidâr, → apparent, + šodan, → become.


Fr.: aperception   

In psychology of education, the fundamental process in acquiring knowledge, and the part played by existing knowledge.

From Fr. aperception, from N.L. apperceptionem, from ap- variant of → ad- before p + → perception.

From prefix bar- "on, upon, up" (Mid.Pers. abar; O.Pers. upariy "above; over, upon, according to;" Av. upairi "above, over," upairi.zəma- "located above the earth;" cf. Gk. hyper- "over, above;" L. super-; O.H.G. ubir "over;" PIE base *uper "over") + âgerteš, → perception.

  آتاهش، کاربرد   
âtâheš, kârbord (#)

Fr.: application   

1) General: The act of applying to a particular purpose or use.
2) Computers: A program that performs a specific function for the user, as contrasted with an environment or operating system. Some examples are Microsoft Windows, Microsoft Word, and Adobe Photoshop. The word "application" is used because each program has a specific application for the user.

Verbal noun of → apply.

application software
  نرم‌افزار ِ آتاهشی   
narm-afzâr-e âtâheši

Fr.: logiciel d'application   

A software with a specific function, such as a word processor or game. Contrast with operating system software.

application; → software.

applied physics
  فیزیک ِ کاربردی   
fizik-e kârbordi (#)

Fr.: physique appliquée   

A set of topics in physics intended for a particular or practical use. Applied physics programs are usually interfaces between pure physics and technology.

Past participle of → apply; → physics.

  آتاهیدن، به کار بردن   
âtâhidan, bé kâr bordan (#)

Fr.: appliquer   

To make use of; to put to use especially for some practical purpose.
To put into operation or effect.
To lay or spread on; to be placed or remain on.
To make a request especially in the form of a written → application.

From M.E. ap(p)lien, from O.Fr. aploiier "apply, use, attach," from L. applicare "to attach to, connect;" figuratively, "devote (oneself) to, give attention," from → ad- "to" + plicare "to fold," → explain.

Âtâhidan, from â- intensive/nuance prefix, + tâh "fold, plait, ply" (on the model of L., as above, → explain); Mid.Pers. tâg "piece, part" + -idan infinitive suffix.
Bé kâr bordan, from "to; for; in; on; with; by; according to," → ad hoc; kâr, → work, bordan "to carry, bear, conduct, take," → range.


Fr.: aprréhender   

1) Arrest (someone) for a crime.
2) → Understand or → perceive. Often to hold in opinion but without positive certainty.

From L. apprehendere "to take hold of, grasp," from → ad- "to" + prehendere "to seize," → prehend.


Fr.: appréhension   

1) Anxiety or fear that something bad or unpleasant will happen.
2) Understanding; grasp.
3) The action of arresting someone (Oxford Dictionary,

Verbal noun of → apprehend.

  ۱) نزدیدن، نزدیک شدن؛ ۲) نزدش   
1) nazdidan, nazdik šodan; 2) nazdeš

Fr.: 1) approche; 2) s'approcher, approcher   

1) (v.intr.) To come near or nearer, as in space or time.
( To come or go near or nearer to in quality, character, time, or condition.
2) (n.) The act of drawing near; nearness or close approximation; the method used or steps taken in dealing with or accomplishing.

M.E. approchen, from O.Fr. aprochier, from L. appropiare, from ad- "to" + propius "nearer," comparative of prope "near".

1) Nazdidan from nazd "near," Mid.Pers. nazd, Av. nas- "to come near, approach, reach," nazdišta- "nearest, next," nazdyo "nearer to," compare with Skt. nas- "to approach, to reach" + -idan "infinitive forming suffix".
2) Nazdeš, from nazd, nazdidan + -eš "noun forming suffix."


Fr.: approbation   

The act of approving; approbation; formal permission or sanction.

approve; → -al.


Fr.: approuver   

To confirm or sanction formally; ratify.

M.E., from O.Fr. aprover "approve, agree to," from L. approbare "to assent to as good, regard as good," from → ad- "to" + probare "to try, test something (to find if it is good)," from probus "honest, genuine," → prove.

Âsandidan, from â- + sandidan, as in pasandidan (with pati-) "to cherish, approve;" ultimately from Proto-Ir. *sand- "to appear, seem good;" cf. Av. sənd- "to appear, seem (good);" Manichean Mid.Pers. shyn "apparent, prominent, splendid;" Mid.Pers. passand "to approve;" Khotanese sad- "to appear, seem, show;" Skt. chand- "to appear, please;" L. censere "to appraise, value, judg" (Cheung 2007).

  ۱) نزدین؛ ۲) نزدینیدن   
1) nazdin (#); 2) nazdinidan

Fr.: 1) approximatif; 2) s'approcher   

1) Nearly exact or correct; near or approaching a certain state, condition, or goal.
2) ( To come close to; be nearly the same as.
(v.intr.) To come near or close, as in degree, nature, or quality.

From L. approximatus, p.p. of approximare "to draw near to," from ad- "to" + proximare "come near," from proximus "nearest," superlative of prope "near".

1) Nazdin from nazd "near" + -in, adjective making suffix, in particular superlative, as in bišin, kamin, kehin, mehin, etc.
2) Nazdinidan from nazdin, as above, + -idan infinitive forming suffix.


Fr.: approximativement   

Not exactly, but nearly or roughly.

Adverb of → approximate.

<< < -ab ab- abo abs abs acc acc ack act acu add adi adv aff agg Ald Alf ali all alp alt Ama amp ana ang ang ann ano ant ant ape apo app app arc are Ari art asp ast ast ast Ata atm ato att aut ave axi > >>