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: 1290
star trail
  رد ِ ستاره   
radd-e setâré

Fr.: traînées stellaires   

A curved → path left by a star on an → imaging detector attached to a → telescope when the telescope does not keep up with the → rotation of the → Earth.

star; → trail.

star-forming region
  ناحیه‌ی ِ دیسش ِ ستاره   
nâhiye-ye diseš-e setâré

Fr.: région de formation d'étoiles   

A region in which → star formation is going on.

star; → formation; → region.

starburst
  ستاره-بلک، بلک ِ ستاره   
setâre-belk, belk-e setâré

Fr.: flambée d'étoiles   

Simultaneous formation of a large number of stars in a region of a galaxy at an exceptionally high rate, compared to the usual star formation rates seen in most galaxies.

star; → burst.

starburst galaxy
  کهکشان ِ ستاره-بلک   
kahkešân-e setâre-belk

Fr.: galaxie à flambée d'étoiles   

A galaxy showing a short-lived intense period of star formation that is unsustainable over the → Hubble time due to the limited supply of gas within a galaxy. Starburst galaxies were first classified by Searle & Sargent (1972) and Searle et al. (1973), based on the blue colors produced by the → massive stars formed during the burst. In the local Universe, starbursts create approximately 10% of the radiant energy and 20% of the massive stars. At z = 1, starburst characteristics are found in 15% of galaxies, presumably attributable to the greater amounts of gas typically present in young galaxies and increased galactic interactions. The starburst's impact on a galaxy and the surrounding → intergalactic medium is primarily due to the consumption of gas that fuels the burst and the feedback from massive stars formed in the burst (McQuinn et al. 2010, astro-ph/1008.1589).

starburst; → galaxy.

Stark effect
  اُسکر ِ اشتارک   
oskar-e Stark

Fr.: effet Stark   

The → splitting of spectral lines of atoms and molecules due to the presence of an external electric field, which slightly changes the → energy levels of the atom. → Zeeman effect.

Named after Johannes Stark (1874-1957), a German physicist, and Physics Nobel Prize laureate (1919); → effect.

starquake
  ستاره-لرز   
setâre-larz

Fr.: tremblement d'étoile   

An astrophysical phenomenon that occurs when the crust of a → neutron star undergoes a sudden adjustment, analogous to an → earthquake on Earth. Starquakes are thought to be caused by huge → stresses exerted on the surface of the neutron star produced by twists in the ultra-strong interior → magnetic fields. They are thought to be the source of the intense → gamma-ray bursts that come from → soft gamma repeaters.

star; → quake.

starspot
  ستاره-لک   
setâre-lak

Fr.: tache stellaire   

A phenomenon similar to a → sunspot but occurring on the surface of → late-type stars other than Sun. Due to spatial resolution constraints, starspots so far observed are in general much larger than those on the Sun, up to about 30% of the stellar surface may be covered, corresponding to sizes 100 times greater than those on the Sun.

star; → spot.

stat-
  استات-   
estât- (#)

Fr.: stat-   

A prefix attached to the name of a practical electrical unit indicating that it is part of the → CGS electrostatic system, e.g. statcoulomb, statvolt. These units are also indicated by the notation → esu (as in "volt esu").

Combining form representing → electrostatic, → -stat

statcoulomb
  استات-کولن   
estât-coulomb

Fr.: stat-coulomb   

A unit of → electric charge in the electrostatic → cgs system of units; equal to the charge that exerts a force of 1 → dyne on an equal charge at a distance of 1 cm under vacuum; equal to 3.3356 x 10-10 → coulombs. Same as → electrostatic unit (esu).

stat-; → coulomb.

state
  ۱) استات، حالت؛ ۲) استاتیدن، استات کردن   
1) estât, hâlat (#); 2) estâtidan, estât kardan

Fr.: 1) état; 2) déclarer, affirmer   

1a) The → condition of a → system characterized by a particular set of values for its properties.
1b) The → phase of matter; → solid, → liquid, or → gas.
See also:
eigenstate, → energy state, → equation of state, → equation of state parameter, → equilibrium state, → excited state, → ground state, → Hartle-Hawking initial state, → Hoyle state, → macroscopic state, → macrostate, → metastable state, → microscopic state, → microstate, → normal state, → quantum state, → singlet state, → solid state, → solid state physics, → steady state theory, → triplet state, → virial equation of state.
2a) To declare definitely or specifically.
2b) To set forth formally in speech or writing (to state a hypothesis).
2c) To set forth in proper or definite form (Dictionary.com).

M.E. stat, partly from M.Fr. estat, partly from L. status "manner of standing, position, condition," noun of action from p.p. stem of stare "to stand;" cognate with Pers. istâdan "to stand," as below.
The sense of "declare in words" (1640s) comes from the notion of "placing (something on the record), setting in a position."

Estât, from istâdan "to stand;" Mid.Pers. êstâtan; O.Pers./Av. sta- "to stand, stand still; to set" (Sogd. ôštât "to stand"); Av. hištaiti; cf. Skt. sthâ- "to stand;" Gk. histemi "put, place, weigh," stasis "a standing still;" L. stare "to stand;" Lith. statau "place;" Goth. standan; PIE base *sta- "to stand"); hâlat, from Ar. Hâlat "state, quality."

statement
  استاتمان   
estâtmân

Fr.: déclaration, affirmation   

1) Something stated.
2) A communication or declaration in speech or writing, setting forth facts, particulars, etc.
3) A single sentence or assertion (Dictionary.com).

Verbal noun of → state (v.)

statesman
  استاتمرد   
estâtmard

Fr.: homme d'Etat   

A person who is experienced in the art of government or versed in the administration of government affairs (Dictionary.com).

From state's man, translation of Fr. homme d'Etat; → state; → man.

static
  ایستا   
istâ (#)

Fr.: statique   

1) Pertaining to bodies, forces, charges, etc. that act in equilibrium; at rest; stationary.
2) Pertaining to → statistics.

From Mod.L. statica, from Gk. statikos "causing to stand," from stem of histanai "to cause to stand," cognate with Pers. istâdan "to stand," as below.

Istâ "standing, static," from istâdan "to stand" (Mid.Pers. êstâtan; O.Pers./Av. sta- "to stand, stand still; set;" Av. hištaiti; cf. Skt. sthâ- "to stand;" Gk. histemi "put, place, weigh," stasis "a standing still;" L. stare "to stand;" Lith. statau "place;" Goth. standan; PIE base *sta- "to stand").

static equilibrium
  ترازمندی ِ ایستا   
tarâzmandi-ye istâ

Fr.: équilibre statique   

The state of a rigid body which is not moving at all. The conditions for static equilibrium are: 1) the sum of the external forces on the object must equal zero, and 2) the sum of the → torques must equal zero. → dynamic equilibrium

static; → equilibrium.

static limit
  حد ِ ایستا   
hadd-e istâ

Fr.: limite stationnaire   

Same as → stationary limit.

static; → limit.

static pressure
  فشار ِ ایستا   
fešâr-e istâ

Fr.: pression statique   

In → fluid mechanics, the → pressure felt by an object suspended in a → fluid and moving with it. This pressure is called static because the object is not moving relative to the fluid. See also → dynamic pressure.

static; → pressure.

static Universe
  گیتی ِ ایستا   
giti-ye istâ

Fr.: Univers stationnaire   

A closed Universe of finite volume with a constant radius of curvature.

static; → Universe.

statics
  ایستاییک   
istâyik

Fr.: statique   

The branch of → mechanics which studies the laws of composition of forces and the conditions of equilibrium of material bodies under the action of forces.

static; → -ics.

Istâyik, from istâ, → static + -ik, → -ics.

station
  ایستگاه   
istgâh (#)

Fr.: station   

A stopping place for trains or other land vehicles, for the transfer of freight or passengers. → space station.

M.E., from O.Fr. station, from L. stationem (nominative statio) "a standing, job, position," related to stare "to stand," cognate with Pers. istâdan "to stand," as below.

Istgâh "standing place," from ist present stem of istâdan "to stand" (Mid.Pers. êstâtan; O.Pers./Av. sta- "to stand, stand still; set;" Av. hištaiti; cf. Skt. sthâ- "to stand;" Gk. histemi "put, place, weigh," stasis "a standing still;" L. stare "to stand;" Lith. statau "place;" Goth. standan; PIE base *sta- "to stand") + gâh "place; time" (Mid.Pers. gâh, gâs "time;" O.Pers. gāθu-; Av. gātav-, gātu- "place, throne, spot;" cf. Skt. gâtu- "going, motion; free space for moving; place of abode;" PIE *gwem- "to go, come").

stationary
  ایست‌ور   
istvar (#)

Fr.: stationnaire   

Having a fixed, unchanging position; motionless. geostationary orbit

M.E. from L. stationarius, in classical L., "of a military station," from statio, → station.

Isatvar, from ist present stem of istâdan "to stand" (Mid.Pers. êstâtan; O.Pers./Av. sta- "to stand, stand still; set;" Av. hištaiti; cf. Skt. sthâ- "to stand;" Gk. histemi "put, place, weigh," stasis "a standing still;" L. stare "to stand;" Lith. statau "place;" Goth. standan; PIE base *sta- "to stand") + -var suffix of possession, variant -ur (Mid.Pers. -uwar, -war; from O.Pers. -bara, from bar- "to bear, carry").

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