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Cocoon Nebula (IC 5146) miq-e pilé Fr.: nébuleuse du cocon An emission nebula located about 3,000 light-years away toward the → constellation → Cygnus. It is thought to be a region of active → star formation. Cocoon, from Provençal Fr. coucoun, from O.Fr. coque "egg shell, nut shell," L. coccum "berry," from Gk. kokkos "berry, seed;" → star; → nebula. Miq, → nebula; pilé "the silkworm's cocoon; a purse", cf. Skt. patta- "woven silk." |
cocoon star setâre-ye pileyi Fr.: étoile dans son cocon A star hidden in a dense envelope of gas and dust which is a strong source of infrared emission. → Cocoon nebula; → star. |
code ramz (#) Fr.: code 1) A system used for brevity or secrecy of communication, in which arbitrarily chosen words,
letters, or symbols are assigned definite meanings. M.E., from O.Fr. code, from L. codex "book, book of laws," later form of caudex "tree trunk," hence "document made up of wooden tablets." Ramz "secret writing, enigma," loan from Ar. |
codeclination hamvâkileš Fr.: codéclinaison The complement of → declination; the angular distance along a great circle from the celestial pole, i.e., 90° - declination. Codeclination, from → co- + → declination. Hamvâkil, from ham-, → co-, + vâkil, → declination. |
codomain ham-daman Fr.: ensemble d'arrivée The set of values that a → function is allowed to take (i.e. may possibly come out of a function), as opposed to the → range. |
coefficient hamgar (#) Fr.: coefficient 1) Math.: A number or letter placed before an
algebraic expression to indicate that the expression is to
be multiplied by that factor, e.g. in the expression 2 x3,
2 is the coefficient of x3. In general, any factor of
a product is called the coefficient of the product of the remaining
factors. Hamgar, from ham- "together," → com- + -gar agent suffix, from kar-, kardan "to do, to make," Mid.Pers. kardan, O.Pers./Av. kar- "to do, make, build," Av. kərənaoiti "makes," cf. Skt. kr- "to do, to make," krnoti "makes," karma "act, deed;" PIE base kwer- "to do, to make." |
coefficient of viscosity hamgar-e vošksâni Fr.: coefficient de viscosité A quantity that indicates a property of fluids and is defined by the ratio of shearing → stress to the rate of change of shearing → strain. It is also simply called viscosity. The coefficient of viscosity is expressed by: μ = (F/A) / (dv/dy), where F is the force required to maintain a steady velocity difference dv between any two parallel layers of the fluid, A is the area of the layers, and dv/dy is the → velocity gradient between two points separated by a small distance measured at right angles to the direction of flow. The unit of viscosity is that of force times distance divided by area times velocity. Thus, in the cgs system, the unit is 1 dyne.cm/cm2.(cm/s), which reduces to 1 dyne.s/cm2. This unit is called 1 → poise. → viscosity; → coefficient. |
coelostat âsmândâštâr Fr.: coelestat A flat mirror with a clock-drive mounted in such a way that it moves from east to west to compensate for the apparent rotation of the Earth in order that the image of a particular area of sky remains fixed in the focal plane. See also → siderostat and → heliostat. Coelostat, from L. coelo-, for caeli-, combination form of coelum "sky" + -stat prefix denoting something that stabilizes, keeps, fixes, from -stata, from Gk. -states "one that causes to stand," or statos "standing," from *sta- "to stand." Âsmândâštâr, from âsmân, → sky, + dâštâr "holder, maintainer," from dâštan "to hold, maintain; to have; to possess," Mid.Pers. dâštan, O.Pers./Av. root dar- "to hold, keep back, maitain, keep in mind," Skt. dhr-, dharma- "law," Gk. thronos "elevated seat, throne," L. firmus "firm, stable," Lith. daryti "to make," PIE *dher- "to hold, support." |
coerce pazuridan Fr.: contraindre, forcer 1) To compel by force, especially by law or authority. M.E., from O.Fr. cohercier, from L. coercere "to restrain, surround," form → com- "together" + arcere "to enclose, confine, keep off," from PIE *ark- "to hold, contain, guard." Pazuridan, literally "to force against," from pa- "contrary to; against; opposing," → counter- + zur "power, force," → strength, + infinitive suffix -idan. |
coercion pazureš Fr.: coercition The act, practice, or power of using physical or moral force to compel a person to do something. Verbal noun of → coerce. |
coercive pazurandé Fr.: coercitif Serving or tending to coerce. |
coercive field meydân-e pazurandé Fr.: champ coercitif Same as → coercive force. |
coercive force niru-ye pazurandé Fr.: force coercitive The strength of an external → magnetic field that brings to zero the → magnetic flux density of a magnetic material when that field is caused to operate in the opposite direction from the orientation of the → magnetization of the material. Also called coercivity. Coercive force is a measure of the magnetization of a → ferromagnetic material. It is usually measured in the units of → oersted or ampere/m. |
coercivity pazurandegi Fr.: coercivité 1) General: The quality of being coercive. |
coeval hamsenn (#) Fr.: du même âge, contemporain Of the same age. |
cofactor hamkarvand Fr.: cofacteur A number associated with an → element of a → determinant. If A is a square matrix [aij], the cofactor of the element aij is equal to (-1)i+j times the determinant of the matrix obtained by deleting the i-th row and j-th column of A. |
cognition šenâxtâr (#) Fr.: connaissance, cognition 1) The mental process of knowing, including → awareness,
→ perception, → reasoning,
and judgment. M.E. cognicioun; L. cognitionem (nominative cognitio, from cognitus p.p. of cognoscere, from → co- + gnoscere, noscere "to learn;" cognate with Pers. šenâs, šenâxt, as below. Šenâxtâr, verbal noun of šenâxtan "to know, recognize," dânestan "to know;" O.Pers./Av. xšnā- "to know, learn, come to know, recognize;" cf. Skt. jñā- "to recognize, know," jānāti "he knows;" Gk. gignoskein "to know, think, judge;" L. gnoscere, noscere "to come to know" (Fr. connaître; Sp. conocer); O.E. cnawan; E. know; Rus. znat "to know;" PIE base *gno- "to know." |
cognitive šenâxtâri (#) Fr.: cognitif 1) Of or pertaining to the act or process of knowing, perceiving, remembering, etc.;
of or relating to → cognition. |
cohere hamdusidan (#) Fr.: adhérer, être cohérent 1) To stick together; be united; hold fast, as parts of the same mass. From L. cohaerere "to cleave together," from → com- "together," + haerere "to stick." Hamdusidan, from ham- "together," → com-, + dusidan (Dehxodâ) "to stick, to adhere," → adhere. |
coherence hamdusi (#) Fr.: cohérence The property of two or more electromagnetic waves when they are in fixed phase relationship over time. If the crests and troughs of the waves meet at the same time and place they are said to be in phase. |
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