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

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

   Homepage   
   


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

<< < -sc Sag sam sat sca sca Sch Sco sec sec sec seg sel sem sep set sha she sho sid sig sil sim sin siz sle smo soc sol sol sol sol sol sou spa spa spe spe spe sph spi spi spr sta sta sta sta sta ste ste sto str str str sub sub sub Sun sup sup sup sup sur swa sym syn > >>

Number of Results: 1316
segregation
  سوایش   
savâyeš

Fr.: ségrégation   

The act or practice of segregating. The state or condition of being segregated. → mass segregation.

Verbal noun of → segregate.

seismic
  لرزه‌ای   
larze-yi (#)

Fr.: sismique   

Of, subject to, or caused by → vibrations of the → Earth. → seismic wave.

From seism, → seismo-, + → -ic.

seismic wave
  موج ِ لرزه‌ای   
mowj-e laez-yi (#)

Fr.: onde sismique   

An → elastic wave generated in the → Earth by an → impulse such as an → earthquake or an → explosion. Seismic waves may travel either along or near the Earth's surface or through the Earth's interior.

seismic; → wave.

seismo-
  لرزه-   
larzé- (#)

Fr.: sismo-   

A combining form meaning "earthquake;" → seismology, → seismograph, etc.

From Gk. seismo- combining form of seismos "shock, earthquake," from seiein "to shake."

Larzé-, from larzé "shaking, trembling," from larzidan "to tremble, shiver;" Mid.Pers. larzidan "to shake, tremble;" Manichean Mid.Pers. rarz- "to shiver with fever;" Proto-Iranian *rarz- "to shake, tremble."

seismograph
  لرزه‌نگار   
larzenegâr (#)

Fr.: sismographe, séismographe   

An instrument that detects, magnifies, and records → seismic waves, especially those caused by → earthquakes or → explosions.

seismo-; → -graph.

seismology
  لرزه‌شناسی   
larzešenâsi (#)

Fr.: sismologie, séismologie   

The branch of geophysics that is concerned with the study of earthquakes and measurement of the mechanical properties of the Earth.

seismo-; → -logy.

seldom
  پرزانه   
perzâné

Fr.: rarement   

Not → often; rarely.

M.E., from O.E. seldum, variant of seldan; cognate with Ger. selten, Goth. silda-, Dutch zelden.

Adverb from perz, → rare.

select
  گزیدن   
gozidan (#)

Fr.: sélectionner, choisir   

To choose from among several.

From L. selectus, p.p. of seligere "to choose out, gather apart," from se- "apart" + legere "to gather, select."

Gozidan "to select, choose;" Mid.Pers. vicitan, wizidan, wizin- "to choose, select, discriminate," related to cin-, cidan "to gather, collect;" Av. vicidāi- "to discern," viciθa- "separation, discernment;" from vi- "apart, away from" (O.Pers. viy- "apart, away;" cf. Skt. vi- "apart, asunder, away, out;" L. vitare "to avoid, turn aside") + kay- "to choose;" cf. Skt. ci- "to gather, heap up," cinoti "gathers."

selection rule
  رزن ِ گزینش   
razan-e gozineš

Fr.: règle de sélection   

Any of a set of rules specifying the relationships between the → quantum numbers that characterize the initial and final states of a quantum-mechanical system in a → discrete transition. Transitions that do not agree with the selection rules are called → forbidden and have considerably lower probability. There are several types of selection rules (→ rigorous selection rule, → LS coupling, etc.) for → electric dipole transition (→ permitted), → magnetic dipole (forbidden), electric → quadrupole (forbidden), etc.

Selection, verbal noun of → select; → rule.

selective absorption
  درشم ِ گزینشی   
daršam-e gozineši

Fr.: absorption sélective   

Absorption which varies with the wavelength of radiation incident upon an absorbing substance.

Selective, verbal noun of → select; → absorption.

selective scattering
  پراکنش ِ گزینشی   
parâkaneš-e gozineši

Fr.: diffusion sélective   

A type of scattering that occurs when certain → particles are more effective at scattering a particular → wavelength of light, as in → Rayleigh scattering.

selective; → scattering.

selenehelion
  ماه‌گرفت ِ افقی   
mâhgereft-e ofoqi

Fr.: selenelion   

Same as → horizontal eclipse.

From Gk. selene "Moon," related to sela "light, brightness, flame," + helion, → sun.

horizontal eclipse.

selenelion
  ماه‌گرفت ِ افقی   
mâhgereft-e ofoqi

Fr.: selenelion   

Same as → horizontal eclipse.

From Fr. selenelion, contraction of → selenehelion.

horizontal eclipse.

selenocentric
  ماه‌مرکزی   
mâh-markazi

Fr.: sélénocentrique   

Referring to or pertaining to the center of the Moon.

Formed on the model of → geocentric, from seleno- combining form of Gk. selene "moon" + -centric, from → center + → -ic.

Mâh-markazi, from mâh, → moon, + markazi, from markaz, → center, + -i, → -ic.

selenocentric gravitational constant
  پایای ِ گرانشی ماه‌مرکزی   
pâyâ-ye gerâneši-ye mâh-markazi

Fr.: constante gravitationnelle sélénocentrique   

A parameter representing the product of the → gravitational constant by the → lunar mass. It is 49.03 x 1011 m3 s-2.

selenocentric; → gravitational; → constant.

selenography
  ماه‌نگاری   
mâh-negâri (#)

Fr.: sélénographie   

Topographic description and charting of the surface of the Moon.

From seleno- combining form of Gk. selene "moon" + → -graphy.

Mâh-negâri, from mâh, → moon + negâri, → -graphy.

self-
  خود-   
xod- (#)

Fr.: auto-   

A combining form of self with a range of related meanings.

From M.E., from O.E. self, seolf, sylf "one's own person, same;" cf. O.Fris. self, Du. zelf, O.H.G. selb, Ger. selbst.

Xod-, from xod; Mid.Pers. xwad "self; indeed;" Av. hva- "self, own."

self-absorption
  خود-درشم   
xod-daršam

Fr.: auto-absorption   

The decrease in the radiation from a material caused by the absorption of a part of the radiation by the material itself.

self-; → absorption.

self-awareness
  خود-آگاهی، خویشتن‌آگاهی   
xod-âgâhi, xištan-âgâhi

Fr.: connaissance de soi   

The → state or → condition of being aware of one's own → personality or → individuality.

self-; → awareness.

self-gravitating
  خود-گراننده   
xod-gerânandé

Fr.: auto-gravitant   

The characteristic of a system of masses, such as a star, kept together by mutual gravity.

self; → gravitate.

<< < -sc Sag sam sat sca sca Sch Sco sec sec sec seg sel sem sep set sha she sho sid sig sil sim sin siz sle smo soc sol sol sol sol sol sou spa spa spe spe spe sph spi spi spr sta sta sta sta sta ste ste sto str str str sub sub sub Sun sup sup sup sup sur swa sym syn > >>