Fr.: projection gnomonique
The projection of a spherical surface onto a plane through a point. A gnomonic → map projection displays all great circles as straight lines, and therefore indicates the shortest path between two points. Small circles are projected as conic sections.
1) The Being perfect in power, wisdom, and goodness who is worshipped
as creator and ruler of the Universe.
M.E. from O.E. akin to O.H.G. got, Ger. Gott, O.N. guð, Goth. guþ, from PIE *gheuH- "to call upon;" cf. Av. zu- "to call, invoke;" O.Pers. (upa)zu- "to proclaim;" Skt. hu-, variant hve- "to call upon, invoke," huta- "invoked," an epithet of Indra, from root *gheu(e)- "to call, invoke."
Xodâ, xodây "god, lord, master;" Mid.Pers. xwadây "king, master;" Av. xvadāta- "autonomous" (darego.xvadāta- "highly autonomous"), from xva-, → self- + dā- "to give, grant, yield" (Pers. dâdan, → datum); cf. Skt. svadhā- "inherent power, habitual power, self-placed," from sva- "self," + dhā- "to place, fix, maintain"
Fr.: méthode de Godunov
Suggested by Sergei K. Godunov (1929-) in 1959, Math. Sbornik, 47, 271, translated 1969, US Joint Publ. Res. Service, JPRS 7226; → method.
talâ (#), zarr (#)
A yellow, ductile → metal which occurs naturally in veins and alluvial deposits associated with quartz or pyrite; symbol Au (L. aurum "shining dawn"). → Atomic number 79; → atomic weight 196.9665; → melting point 1,064.43 °C; → boiling point 2,808 °C; → specific gravity 19.32 at 20 °C.
M.E., from O.E. gold, from P.Gmc. *gulth- (cf. O.H.G. gold, Ger. Gold, Du. goud, Dan. guld, Goth. gulþ), from PIE base *ghel-/*ghol- "yellow, green;" cf. Mod.Pers. zarr "gold," see below.
Talâ "gold," variants tala, tali.
Fr.: conjecture de Goldbach
Every number greater than 2 is the sum of two → prime numbers. Goldbach's number remains one of the most famous unsolved mathematical problems of today.
Named after the German mathematician Christian Goldbach (1690-1764); → conjecture.
adad-e zarrin (#)
Fr.: nombre d'or
1) The number giving the position of any year in the lunar or
→ Metonic cycle of about 19 years.
Each year has a golden number between 1 and 19. It is found by adding
1 to the given year and dividing by 19; the remainder in the division
is the golden number. If there is no remainder the golden number
is 19 (e.g., the golden number of 2007 is 13).
Fr.: nombre d'or
If a line segment is divided into a larger subsegment (a) and a smaller subsegment (b), when the larger subsegment is related to the smaller exactly as the whole segment is related to the larger segment, i.e. a/b = (a + b)/a. The golden ratio, a/b is usually represented by the Greek letter φ. It is also known as the divine ratio, the golden mean, the → golden number, and the golden section. Its numerical value, given by the positive solution of the equation φ2 - φ - 1 = 0, is approximately 1.618033989. The golden ratio is closely related to the → Fibonacci sequence.
Fr.: anneau ténu
An extremely faint and broad ring (in fact two rings) of tiny particles around → Jupiter lying just outside the main ring.
Gossamer "a film of cobwebs floating in air in calm clear weather; an extremely delicate variety of gauze, used esp. for veils," from M.E. gossomer, from gos "goose" + somer "summer." Possibly first used as name for late, mild autumn, a time when goose was a favorite dish, then transferred to the cobwebs frequent at that time of year; → ring.
Halqé, → ring; tanté "cobweb, spider's web," from tanidan "to spin, twist, weave" (Mid.Pers. tanitan; Av. tan- to stretch, extend;" cf. Skt. tan- to spin, stretch;" tanoti "stretches," tantram "loom;" Gk. teinein "to stretch, pull tight;" L. tendere "to stretch;" PIE base *ten- "to stretch"), Pers. târ "string," tur "fishing net, net, snare," and tâl "thread" (Borujerdi dialect) belong to this family; variants tanta "cobweb," tanadu, tafen, kartané, kârtané, kâtené, Pashtu tanistah "cobweb;" cf. Skt. tantu- "cobweb, thread, string."
kamarband-e Gould (#)
Fr.: ceinture de Gould
A band of hot, young stars (O and B types) and molecular clouds that stretches around the sky. It is tilted by about 20 degrees with respect to the Galactic plane, and has a diameter of about 3000 light-years.
Named after the American astronomer Benjamin A. Gould (1824-1896), who discovered it in 1879 by studying the distribution of the nearest luminous stars in space; → belt.
General: To rule over, to exercise authority.
From O.Fr. governer "to govern," from L. gubernare "to direct, rule, guide," originally "to steer," from Gk. kybernan "to steer or pilot a ship" (the root of cybernetics).
Faršâyidan, from Av. fraxšā(y)- "to establish authority, to deploy lordship," from fra- "forward, forth" (Av. pouruua- "first"; cf. Skt. pūrva- "first," pra- "before, formerly," Gk. pro; L. pro; O.E. fyrst "foremost," superlative of fore, from P.Gmc. *furisto; E. fore) + xšā(y)- "to rule, have power," xšayati "has power, rules," xšāyô "power;" O.Pers. xša- "to rule," pati-xša- "to have lordship over," Xšyāršan- "hero among kings" or "ruling over heroes" the proper name of the Achaemenid emperor Hellenized as Xerxes, upari.xšay- "to rule over," xšāyaθiya- "king;" Mid.Pers. šâh "king," pâdixšâ(y) "ruler; powerful; authoritative;" Mod.Pers. šâh "king," pâdšâh "protecting lord, emperor, monarch, king," šâyestan "to be worth, suit, fit;" cf. Skt. ksā- "to rule, have power," ksáyati "possesses;" Gk. ktaomai "I acquire," ktema "piece of property;" PIE base *tkeh- "to own, obtain."
A regulating device for maintaining uniform speed regardless of changes of load, as by controlling the supply of gas, steam, fuel, etc.
Agent noun from → govern.
A block of the Earth's crust, bounded by two normal faults, that has dropped downward in relation to adjacent portions.
Graben, from Ger. Graben "ditch, trench;" O.H.G. graban "ditch," grab "grave, tomb;" Goth. graban "ditch;" P.Gmc. *graban; cf. O.E. græf "grave, ditch;" E. a grave; PIE base *ghrebh-/*ghrobh- "to dig, to scratch, to scrape."
Foruzamin, from foru- + zamin. The first component foru- "down, downward; below; beneath;" Mid.Pers. frôt "down, downward;" O.Pers. fravata "forward, downward;" cf. Skt. pravát- "a sloping path, the slope of a mountain." The second component zamin, variant zami "earth, ground," from Mid.Pers. zamig "earth;" Av. zam- "the earth;" cf. Skt. ksam; Gk. khthôn, khamai "on the ground;" L. homo "earthly being" and humus "the earth" (as in homo sapiens or homicide, humble, humus, exhume); PIE root *dh(e)ghom "earth."
1) padâk; 2) padâkidan
Fr.: 1) grade, échelon; 2) classer, noter, graduer
1) A degree or step in a scale, as of rank, advancement, quality, value, or intensity.
From Fr. grade "grade, degree," from L. gradus "step, pace, gait, walk;" figuratively "a step, stage, degree," related to gradi "to walk, step, go," and second element in congress, progress, etc.; from PIE *ghredh-; cf. Lith. gridiju "to go, wander," O.C.S. gredo "to come," O.Ir. in-greinn "he pursues."
Padâk, from Baluci padâk "step, stair, ladder" (ultimately from Proto-Ir. *padaka-), older form of Pers. pâyé "step, base," from Mid.Pers. pâd, pây; Av. pad-, cf. Skt. pat: Gk. pos, genitive podos; L. pes; PIE *pod-/*ped-.
1) General: Degree of slope.
From L. gradient-, gradiens, pr.p. of gradi "to walk, go," from grad- "walk" + -i- thematic vowel + -ent suffix of conjugation.
Ziné "ladder, steps, stair," may be related to ciné, from cidan "to place (something) above/upon (another similar thing);" cf. Lori râ-zina, Yazdi râ-cina "stairs," Nâyini orcen "stairs, ladder;" the phoneme change -c- into -z-, as in gozidan, gozin-/cidan, cin- both deriving from Proto-Ir. *cai- "to heap up, gather, collect."
Proceeding, taking place, changing by small degrees.
From M.L. gradualis, from L. gradus "step."
Padâkvâr, from padâk "grade," + -vâr a suffix which denotes
"suiting, befitting, resembling, in the manner of, possession."
belk-e padâkvâr, ~ pâypâyé
Fr.: sursaut graduel
A burst that happens gradually, in contrast to a sudden burst.
1) padâk dâdan, padâkidan; 2) padâk gereftan, padâkidé šodan; 3) padâk dâdan, padâkidan; 4) padâkmand, padâkidé
Fr.: 1) graduer; 2) obtenir son diplôme; 3) conférer un diplôme; 4) licencié, diplômé
1) To divide into or mark with degrees or other divisions, as the
scale of a thermometer.
M.E., from M.L. graduatus, p.pa. of graduari "to take a degree," from L. gradus "step, → grade."
1, 3) Padâk dâdan, compound infinitive, padâkidan simple infinitive,
both from padâk, → grade, + dâdan "to give,
grant," → datum, and -idan,
padâkeš, padâk dehi, padâk giri
1) Marking the scale of an instrument, e.g. the stem of a thermometer is graduated in
Verbal noun of → graduate.
1) A small, hard seed of plants, especially the seed of cereals.
M.E. grain, grein, from O.Fr. grein, from L. granum "seed;" akin to corn.
Dâné "grain, seed;" Mid.Pers. dân, dânag "seed, corn;" Av. dānô- in dānô.karš- "carrying grains; an ant;" cf. Skt. dhânâ- "corn, grain;" Tokharian B tāno "grain;" Lith. duona "corn, bread."
Fr.: coagulation des grains
Sticking together of micron- to centimetre-sized grains occurring in the interstellar and protoplanetary environments to form larger grain agglomerates.