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convective vortex gerdšâr-e hambazi Fr.: tourbillon convectif A common feature of the atmosphere that ranges from small-scale → vortices such as → dust devils, to large-scale systems such as → cyclones. → convective; → vortex. |
convective zone zonâr-e hambazi Fr.: zone convective A zone inside a star in which → convection takes place; the central → core in → massive stars and the zone underneath → photosphere in low mass stars like the Sun. Recent works predict the presence of a thin convection zone in sufficiently massive main sequence stars which originates from the iron opacity and partial helium ionization. See also → iron convection zone. → convective; → zone. |
converge hamgerâyidan (#) Fr.: converger 1) General: To tend to meet in a point; incline toward each other. From L.L. convergere "to incline together" from → com- "together" + vergere "to bend." Hamgerâyidan, from ham- "together," → com- + gerâyidan "to incline toward, verge on; to intend," Mid.Pers. grayidan "to lean, incline; to intend, desire," → diverge. |
convergence hamgerâyi (#) Fr.: convergence 1) General: Act or state of converging. From converg-, from → convergent + -ence, equivalent to → -ance. Hamgerâyi, verbal noun from hamgerâyidan, → converge. |
convergent hamgerâ (#) Fr.: convergent Coming together, as a light beam after passing through a convex lens which brings the beam into the focus. Verbal ddj. from → converge. |
converging mirror âyene-ye hamgerâ (#) Fr.: miroir convergent A concave mirror that reflects a parallel beam into a convergent beam. |
conversion hâgard Fr.: conversion The act or process of converting; state of being converted. → convert. Verbal noun of → convert. Hâgard, from hâ- prefix denoting "reversal; to," sometimes creating nuance [Dehxodâ], + gard present stem of gardidan, gaštan "to change; to turn;" Mid.Pers. vartitan; Av. varət- "to turn, revolve;" cf. Skt. vrt- "to turn, roll," vartate "it turns round, rolls;" L. vertere "to turn;" O.H.G. werden "to become;" PIE base *wer- "to turn, bend." |
conversion factor karvand-e hâgard Fr.: facteur de conversion 1) A numerical factor that, by multiplication or division, translates one
unit or value into another. → conversion; → factor. |
convert hâgard kardan Fr.: convertir 1) To change units of one measuring or calculating system into units of another. M.E. converten, O.Fr. convertir, from L. convertere "to turn around, transform," from → com- "together" + vertere "to turn;" cognate with Mod.Pers. gardidan "to change, to turn," → conversion. Compound verb from hâgard, → conversion, + kardan "to do, to make," → -ize. |
converter hâgardgar Fr.: convertisseur A device that receives data in one form and converts it to another. → analog-to-digital converter. |
convex kuž (#) Fr.: convexe Having a surface that is curved or rounded outward. From M.Fr. convexe, from L. convexus "vaulted, arched," p.p. of convehere "to bring together," from → com- "together" + vehere "to bring" (cf. Skt. vah- "to carry, lead," vahitra "vehicle," Av. vazaiti "to lead," Mid.Pers. waz-, wazidan "to carry away," Gk. oxos "chariot," PIE base *wegh- "to go, carry, drive"). Kuž "humped," Mid.Pers. kôf "hill, mountain; hump" (Mod.Pers. kuh, "mountain"), kôfik "humpbacked," O.Pers. kaufa-, Av. kaofa- "mountain." |
convex lens adasi-ye kuž (#) Fr.: lentille convexe A lens that converges an incident beam of light to a focus. → convex; → lens. |
convince paruxidan Fr.: convaincre To move by argument or evidence to belief, agreement, consent, or a course of action (Dictionary.com). From L. convincere "to overcome decisively," from the intensive prefix → com- + vincere "to conquer, overcome, defeat," from PIE root *weik- "to fight, conquer." Paruxidan, from Parthian Mid.Pers. prywx- "to conquer, overcome," from prefix pari- + yux "yoke;" Av. yuj- "to harness, yoke," variants yuj, juh, jut, jot; Mid.Pers. jug, ayoxtan "to join, yoke;" Pers. (+*pari-) piruz, pêrôz "victorious," → yoke. |
convincing paruxandé Fr.: convaincant Capable of causing someone to believe that something is true or real (OxfordDictionaries.com). |
convocation hamvac Fr.: convocation The act of convoking. The state of being convoked. Verbal noun of → convoke. |
convoke hamvacidan Fr.: convoquer To call together; summon to meet or assemble (Dictionary.com). M.E., from M.Fr. convoquer, from L. convocare "to call together," from → con- "together," + vocare "to call," from vox, → voice. Hamvacidan, from ham-, → com-, + vac "word," → voice, + -idan infinitive suffix. |
convolution hamâgiš Fr.: convolution 1) A mathematical combination of two functions which involves multiplying
the value of one function at a given point with the value of another
function, the weighting function, for a displacement from that point
and then integrating over all such displacements. The process is
repeated for every point of the function. Convolution expresses how the shape of
a function is altered by the other. In mathematical terms, the convolution of two functions
f(x) and g(x) is defined by:
f*g = ∫f(u)g(x - u) du, integral from -∞ to +∞. Verbal noun of → convolve. |
convolution theorem farbin-e hamâgiš Fr.: théorème de convolution A theorem stating that the → Fourier transform of the convolution of f(x) and g(x) is equal to the product of the Fourier transform of f(x) and g(x): F{f*g} = F{f}.F{g}. → convolution; → theorem. |
convolve hamâgišidan Fr.: convoluer 1) To roll or wind together. From L. convolvere "to roll together," from → com- "together" + volvere "to roll, turn," PIE base *wel- "to turn, revolve;" cf. Skt. valati "he turns," ulba- "womb, vulva," Gk. eilyein "to roll, wrap, fold." Hamâgiš, from ham- "together", → com-, + âgišidan "to entwine, to twist" (Dehxodâ), from Mid.Pers. gyš- "to bind, tie," hangyš- "to fasten to;" cf. Sogd. patigyš- "to imprison, confine;" Proto-Ir. *kaš- "to imprison" (Cheung 2007). |
cookie cookie Fr.: cookie An identifier file that a website automatically places in the user's computer hard drive. The cookie is used by the website to identify that a user has been on the website previously. Users concerned about privacy may disable cookies in their browser's setting. From Du. koekje "little cake," diminutive of koek "cake," from M.Du. koke, akin to cake, M.E., from O.N. kaka (O.H.G. kuocho "cake"), any relation with Pers. kâk "biscuit; dry bread"? (loaned in Ar. ka'k). |
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