To derive as a conclusion from facts or premises.
L. deducere "to lead down, derive," from → de- "down" + ducere "to lead."
Foruhâxtan, foruhâzidan, from foru- "down," → de- + Mid.Pers. hâxtan, hâzidan "to lead, guide, persuade," Av. hak-, hacaiti "to attach oneself to, to join," cf. Skt. sacate "accompanies, follows," Gk. hepesthai "to follow," L. sequi "to follow;" PIE *sekw- "to follow."
1) The act or process of deducting; something that is or may be deduced.
Verbal noun from → deduce.
Of or relating to → deduction.
Fr.: raisonnement déductif
1) žarf (#), gowd (#); 2) žarfnâ (#)
Fr.: 1) profond; 2) profondeur
1a) General: Extending well inward from an outer surface or back from an edge.
O.E. deop, from P.Gmc. *deupaz, from PIE *d(e)u- "deep, hollow."
Žarf "deep;" variants Gilaki jalf, julf, jal; Tabari
jol, jal, jul; Baluci jahl, johl; Kermâni jarr "deep;"
Mid.Pers. zufr; Av. jafra- "deep."
Fr.: pose profonde
An exposure in which the detector shutter remains open for a relatively long time in order to bring out the weaker features of the observed object. In practice a deep exposure with a CCD detector is usually obtained from co-addition of shorter exposures.
Fr.: champ profond
An area on the sky whose image is obtained with a deep exposure, such as → Hubble Deep Field.
Fr.: image profonde
An image obtained using a deep exposure to reveal the weak features of the object.
âk; kâst (#)
General: Something or a lack of something that results in incompleteness,
inadequacy, or imperfection.
From L. defectus "failure," from p.p. of deficere "to fail, desert," from → de- "down, away" + facere "to do," (cf. Fr. faire, Sp. hacer), from PIE base *dhe- "to put, to do" (cf. Av. dadaiti "he puts," Skt. dadhati "puts, places," Hitt. dai- "to place," Gk. tithenai "to put."
Âk "defect, blemish;" Mid.Pers. ak, âk "evil, harm;"
Av. aka- "bad, wicked;" cf. Skt. aka- "pain , trouble."
falak-e hâmel (#)
In Ptolemy's geocentric model, the circle around the Earth in which the center of the → epicycle of a body was thought to move.
Deferent, from L. deferent-, pr.p. of deferre "to carry from or down, transfer" from → de- + ferre "to carry, bear," from PIE *bher- "to bear, to carry, to take" (cf. O.Pers./Av. bar- "to bear, carry," barəθre "to bear" (infinitive), Mod.Pers. bordan, bar- "to carry," Skt. bharati "he carries," Gk. pherein "to carry").
Falak-e hâmel, from Ar. falak "heaven; orbit, sphere" + hamil "carrier."
Fr.: rétention de charge
In a CCD detector, phenomenon caused by charge traps or potential pockets, which prevent electrons from being released to the adjacent pixel; eventually the electrons may be released in a subsequent cycle.
Differed, p.p. of differ, from O.Fr. différer, from L. differre "set apart, put off, delay," also "be different, differ," → differ; → charge.
Bâr→ charge; bâzdâšté "prevented," p.p. of bâzdâštan, from preventive suffix bâz- + dâštan "to hold, have, maintain," Mid.Pers. dâštan, O.Pers./Av. root dar- "to hold, keep back, maitain, keep in mind," Skt. dhar- "to hold, keep, preserve," dharma- "law," Gk. thronos "elevated seat, throne," L. firmus "firm, stable," Lith. daryti "to make," PIE *dher- "to hold, support."
1) To state or set forth the meaning of (a word, concept, etc.).
From O.Fr. définir "to end, determine," from L. definire "to limit, determine, explain," from → de- + finire "to bound, limit," from finis "boundary."
Hedâridan, infinitive from Semnâni hedâr "boundary (between pieces of lands)," Tabari hedâri "boundary, border," may be related to Av. haêtav- "dam, dike," Skt. setu- "a ridge of earth, bank, dike, dam, bridge."
1) Clearly characterized or fixed.
P.p. of → define.
Clearly defined or determined; having fixed limits. → definite integral.
From L. definitus "limited, precise," p.p. of definire→ define.
Hedârmand from hedâr, stem of hedârdan→ define, + -mand possession suffix.
Fr.: intégrale définie
An integral with upper and lower limits.
1) The act or process of establishing some value or condition with precision.
Verbal noun of → define.
Most reliable or complete (as of a text, author, criticism, study, judgement, or the like) that serves as a standard or reference point.
M.E., from O.Fr., from L. definitivus, from definit(us)→ definite + -ivus a suffix of adjectives.
Hedârâ, adj., from hedâr present stem of hedâridan→ define + adj. suffix -â.
Fr.: faire une déflagration, s'enflammer
To burn suddenly and violently with great heat and intense light. → deflagration.
From L. deflagratus, p.p. of deflagrare "to burn down," from → de- + flag(rare) "to blaze, glow, burn" (L. fulgur "lightning;" PIE *bhleg- "to shine;" cf. Gk. phlegein "to burn, scorch," Skt. bhárgas- "radiance, lustre, splendour," O.E. blæc "black") + -atus "-ate"
Taškaftidan, from taš "fire," variant of âtaš→ fire + kaftidan "to explode," → explode.
A rapid → chemical reaction in which the → output of → heat is enough to enable the reaction to proceed and be accelerated without input of heat from another source. The effect of a true deflagration under confinement is an → explosion. See also: → detonation; → explosion.
Verbal noun of → deflagrate.