manšur-e šekastgar (#)
Fr.: prisme réfractant
A prism that is used as a dispersing element in a spectrograph.
teleskop-e šekasti (#), durbin-e ~ (#)
Fr.: lunette astronomique
A telescope in which an image is formed by the refraction of light through a lens or lens system.
1) Optics: The change of direction which a beam of light undergoes as it
enters a medium of different → refractive index.
From L.L. refractionem (nominative refractio) "a breaking up," from L. refractus, p.p. of refringere "to break up," from re- "back" + combining form of frangere "to break," from PIE base *bhreg- "to break" (cf. Goth. brikan, O.E. brecan "to break;" Lith. brasketi "crash, crack").
Šekast, past stem of šekastan "to break, split;" Mid.Pers. škastan "to break;" Av. scind-, scand "to beak, cleave;" Proto-Iranian *skand- "to break, cleave;" PIE sken- "to cut off."
Fr.: indice de réfraction
Of any optical medium, the ratio of the → speed of light in vacuum (c) to that in the medium (v): n = c/v. The refractive index for vacuum, by definition, is 1. The refractive index of air is 1.00029 at standard temperature (25 °C) and pressure (1 atm). The refractive index of a medium depends on the wavelength of refracted wave. With light waves, n increases as the wavelength decreases. → Snell's law can be used to derive n. Same as → index of refraction.
Same as → refracting telescope.
Agent noun of refract, → refraction.
From refract, → refraction + adj. suffix -ory.
Sarkeš "refractory, disobedient, rebellious, stubborn,"
literally "withdrw, remove head," from sar
"head" (variants soru, sorun "horn,"
karnâ "a trumpet-like wind instrument," variant sornâ "a wind instrument;"
Mid.Pers. sar "head," sru "horn;" Av. sarah- "head,"
srū- "horn, nail;" cf. Skt. śiras- "head, chief;"
Gk. kara "head," karena "head, top," keras "horn;"
L. cornu "horn," cerebrum "brain;"
P.Gmc. *khurnaz (Ger. Horn, Du. horen;
cognate with E. horn, as above, from PIE *ker- "head, horn;"
O.E. horn "horn of an animal," also "wind instrument;"
E. horn); PIE base *ker-
"head, horn, top, summit")
+ keš present stem of kešidan, kašidan
"to draw; withdraw, remove" (dialectal Yaqnavi xaš "to draw," Qomi xaš
"streak, stria, mark," Lori kerr "line;"
Av. karš- "to draw; to plow," karša-
"furrow;" Proto-Iranian *kerš-/*xrah- "to draw, plow;"
cf. Skt. kars-, kársati "to pull, drag, plow;"
Gk. pelo, pelomai "to move, to bustle;" PIE base kwels-
An act or instance of refusing.
Nežan, from ne- "down, below," → ni-, + žan variant of zan present stem of zadan "to hit, strike," variants Zazaki jinen-, Gazi žen-/žent "to beat, hit," Baluchi jat/jan- "to strike, hit," Awromani žanây/-žan- "to shut (the door)," Pashto -žan "to chop, mince," → beat.
M.E. refusen, from M.Fr. refuser, from L. refusus, p.pa. of refundere "to give back," from → re- "back" + fundere "to pour."
Verb from → refusal.
The quality of being → refutable.
Capable or being refuted.
The act or process of refuting.
To prove to be false or erroneous, as an opinion or charge. According to Karl Popper (1902-1994), a theory that cannot be refuted is not scientific. Related words: → falsify, → reject, → repulse, → recoil; → refuse.
From L. refutare "drive back, repress, repel," from → re- "back" + futare "to beat," probably from PIE base *bhau- "to strike down"
Vâkutidan, from vâ- "back," → re-, + kutidan (Kurd., Semnani, Sorxeyi, etc.) "to beat, strike," variant of kubidan, kuftan "to pound, strike, beat;" Mid.Pers. kôftan, kôstan "to beat, strike."
1) To produce anew; bring into existence again; to bring new and more vigorous.
1) Act of regenerating; state of being regenerated.
1) Of, relating to, or characterized by regeneration.
pezeški-ye bâz-âzânandé, ~ bâz-âzâneši
Fr.: médecine régénérative
A branch of medicine that replaces or regenerates injured or diseased human cells, tissue, or organs, to restore or establish normal function.
A large, usually continuous segment of a surface or space; area. → H II region.
M.E., from Anglo-Fr. regioun; O.Fr. region, from L. regionem (nominative regio) "district, country, direction, boundary," from regere "to direct," cognate with Pers. râst, → right.
Nâhiyé, loan from Ar. nâHiyat.
1) barnus; 2) barnusidan
Fr.: 1) registre; 2) enregistrer
1a) A book in which records of acts, events, names, etc., are kept;
a list or → record of such acts, events, etc.
M.E. registre, from M.Fr., from O.Fr. registre and directly from M.L. registrum, alteration of L.L. regesta "list, matters recorded," noun use of L. regesta, from regestus, p.p. of regerere "to record; retort," literally "to carry back, bring back" from → re- "back" + gerere "carry, bear."
1) The act or instance of registering.
1) The act of registering; registration.
→ register + -y.