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orthogonal ardâkonj Fr.: orthogonal In elementary geometry, pertaining to or involving right angles or perpendiculars. → ortho- + gonia "angle," related to gony "knee;" L. genu "knee;" Mod.Pers. zânu "knee;" Av. žnav-, žnu- "knee;" Skt. janu-; PIE base *g(e)neu-, see below, + → -al Ardâkonj, from ardâ-, → ortho-, + konj "angle, corner, confined place" (variants xong "corner, angle," Tabari kânj, Kurd. kunj, Hamadâni kom), maybe from the PIE base *g(e)neu-, as above, and related to Mod.Pers. zânu "knee" (Av. žnu-), Skt. kona- "angle, corner," Gk. gony, gonia, L. cuneus "a wedge," Albanian (Gheg dialect) kân "angle, corner," Albanian (Toks) kënd "angle, corner." |
orthogonal functions karyâhâ-ye ardâkonj Fr.: fonctions orthogonales A set of functions, any two of which, by analogy to orthogonal vectors, vanish if their product is summed by integration over a specified interval. → orthogonal; → function. |
orthogonal lines xatthâ-ye ardâkonj Fr.: droites orthogonales Perpendicular lines. → orthogonal; → line. |
orthogonal trajectory tarâyešâne-ye ardâkonj Fr.: trajectoire orthogonale Math.: An → isogonal trajectory where the family of curves are cut at right angles. → orthogonal; → trajectory. |
orthogonal vectors bordârhâ-ye ardâkonj Fr.: vecteurs orthogonaux Two non-zero vectors which are perpendicular, i.e. their → scalar product is zero. → orthogonal; → vector. |
orthogonality ardâkonji Fr.: orthogonalité 1) The property of → orthogonal functions. → orthogonal; → -ity. |
orthohydrogen ardâ-hidrožen Fr.: orthohydrogène Molecular hydrogen in which the nuclei (protons) of the two hydrogen atoms contained in the molecule have spins in the same direction. → parahydrogen |
orthonormal vectors bordârhâ-ye ardâhanjârvar Fr.: vecteurs orthonormaux Two non-zero vectors that are → orthogonal and have magnitude 1. → orthogonal; → vector. |
orthorhombic ardâlowzik Fr.: orthorhombique Of or relating to a crystalline structure characterized by three mutually perpendicular axes of different length. → orthorhombic crystal system. |
orthorhombic crystal system râžmân-e boluri-ye ardâlowzik Fr.: système cristallin orthorhombique A → crystal system that has three mutually perpendicular axes, each of which is of a different length than the others. → orthorhombic; → crystal; → system. |
orthoscopic ardâbini Fr.: orthoscopique Of or relating to an optical system corrected for → distortion. |
orthoscopic eyepiece cešmi-ye ardâbini Fr.: oculaire orthoscopique A telescopic eyepiece that produces a wide field of view (between 40° and 50°). The eyepiece consists of a single element lens that is normally plano-convex, and a cemented triplet that is usually symmetrical. → orthoscopic; → eyepiece. |
oscillate navidan (#) Fr.: osciller To have, produce, or generate oscillations. → vibrate. From L. oscillatus, p.p. of oscillare "to swing," from oscill(um) "swing" + -ate a suffix forming verbs from L. words. Navidan "to swing, oscillate," from nâvidan, literally "to swing like a ship," from nâv "ship;" O.Pers./Av. *nāv-, O.Pers. nāviyā- "fleet;" Skt. nau-, nava- "ship, boat;" Gk. naus "ship;" PIE *nau- "boat." |
oscillating Universe giti-ye navandé Fr.: Univers oscillatoire A cosmological model in which the Universe is closed and undergoes a series of oscillations, each beginning with a big bang and ending with a big crunch. |
oscillation naveš (#) Fr.: oscillation The state of any quantity when the value of that quantity is continually changing so that it passes through maximum and minimum values. Verbal noun of → oscillate. |
oscillation mode tarz-e naveš, mod-e ~ Fr.: modes d'oscillation Same as → pulsation mode. → oscillation; → mode. |
oscillator navešgar (#) Fr.: oscillator A device for producing sonic or ultrasonic pressure waves in a medium. A device with no rotating parts for converting direct current into alternating current. Agent noun of → oscillate. |
oscillator strength zur-e navešgar Fr.: force d'oscillateur A quantum-mechanical measure of the probability that a specific atomic transition will occur. It is used in the equation for the absorption coefficient of a spectral line. Also known as f value. → oscillator; → strength. |
osculate âbusidan Fr.: Geometry: Of a curve, to touch another curve so as to have the same tangent and curvature at the point of contact. From L. osculatum p.p. of osculari "to kiss," from osculum "kiss," literally "little mouth," diminutive of os "mouth;" PIE *os-/*ous- "mouth;" cf. Av. āh- "mouth;" Skt. ās-, āsán- "mouth;" Hittite aiš- "mouth;" O.Ir. á "mouth;" O.N. oss "mouth." Âbusidan, from â- a nuance prefix + busidan "to kiss," related to buyidan "to smell," buy "smell, scent;" Mid.Pers. bôy, bôd "smell, scent; consciousness," bôyidan "to smell," Mod./Mid.Pers. bustân "garden," Parthian (prefixed *pati-) pdbws- "to desire; to hope for;" Av. baod- "to perceive, notice, become aware of; to smell of," baoδi- "smell, fragrance," baozdri- "who gets to know sexually;" cf. Skt. bodh- "to wake, awaken; to perceive, pay attention," Buddha "awakened, enlightened;" Gk. peuthomai "to learn, hear;" Lith. budeti "to wake;" O.C.S. bljusti "to take care;" PIE base *bheudh- "to be aware, to make aware." |
osculating âbusandé Fr.: osculateur Relating to → osculate. Participial adjective of → osculate. |
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