From Ar. Al-dhayl "skirt of a garment; tail."
A → thermodynamic process that occurs without
→ loss or → gain of
From Gk. adiabatos "impassable," from a- "not" + diabatos "passable," from diabainein "to go across," from dia- " through" + bainein "to go."
Bidarrow from bi- "not; without" + darrow "way out," from dar "out" + row "to go, going," from raftan "to go."
degaršod-e bidarrow, degareš-e ~
Fr.: changement adiabatique
A change taking place in a system that has perfect thermal insulation, so that heat cannot enter or leave the system and energy can only be transferred by work.
Fr.: indice adiabatique
Of a gas, the ratio of its → specific heat at constant pressure to its specific heat at constant volume: γ = CP/ CV.
adiabatic initial conditions
butârhâ-ye âqâzin-e bidarrow
Fr.: conditions initiales adiabatiques
The assumption whereby the density fluctuations in the very → early Universe would be produced by compressing or decompressing of all components of a homogeneous Universe. The adiabatic initial conditions lead to coherent oscillations in the form of peaks in the → temperature anisotropy spectrum. See also → acoustic peak, → baryon acoustic oscillation.
Fr.: phase adiabatique
Same as the → Sedov-Taylor phase.
Fr.: processus adiabatique
→ adiabatic, → process.
Fr.: choc adiabatique
adiabatic temperature gradient
zine-ye damâ-ye bidarrow
Fr.: gradient de température adiabatique
The temperature gradient defining the → radiative equilibrium condition in a region. It is expressed as: dT/dr = (1 - 1/ γ)((T / P)(dP / dr), where T and P are temperature and pressure, dT / dr and dP / dr temperature and pressure gradients respectively, and γ = CP / CV. For radiative equilibrium to be stable against → convection, the actual temperature gradient must be less than the adiabatic temperature gradient, i.e. |dT /dr|rad < |dT /dr|ad. See also → Schwarzschild's criterion.
In grammar, a word that qualifies, describes, or quantifies a noun.
M.E., from O.Fr. adjectif, from L. adjectivum "that is added to (the noun)," neuter of adjectivus "added," from p.p. of adicere "to throw or place (a thing) near," from → ad- "to" + iacere "to throw," → jet.
Zâbé, from zâb "attribute, quality" (Dehxodâ); probably related to zib "beauty, adornment," zibâ "beautiful, adorned," zivar "ornament," zab "easy; gratis; right, direct;" from Proto-Ir. *zai- "to adorn, to equip."
1) To be close to or in contact with.
Âbandidan, âbanidan, from prefix â- + band, vand, bastan, in dialects contracted to ban-, van- "to bind, attach," → band, + -idan infinitive suffix.
Literally "joined to." → adjoint matrix.
Fr.: matrice adjointe
1) To change (something) so that it fits, corresponds, or conforms; adapt; accommodate.
M.E. ajusten, "to correct, remedy; arrange, settle, compose," from M.Fr. adjuster, O.Fr. ajouter "to join," from L.L. adjuxtare "to bring near," from L. → ad- "to" + juxta "next," related to jungere "to join," from PIE *yeug- "to join," → conjugate, akin to E. → yoke.
Jutidan, from Kurd. Soriani jut, jot "pair, couple, twin," Aftari jot "yoke," classical Pers. yuq, → yoke.
The act of adjusting.
Verbal noun of → adjust.
1) To choose or take as one's own; make one's own by selection or assent.
The act of adopting. The state of being adopted.
Of or involving adoption. Acquired or related by adoption.
The second innermost known satellite of Jupiter, whose orbit is situated at a distance of about 129 000 km from the planet, and its orbital period is of 0.298 days; also known as Jupiter XV. Adrastea is 25 x 20 x 15 km in size.
In Gk. mythology, Adrastea was the daughter of Zeus and Ananke and the distributor of reward and punishments.
To take up and hold another substance on the surface.