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.
To bend or turn aside; turn from a true course or straight line.
From L. deflectere "to bend down, turn aside," from → de- "away" + flectere "to bend, turn."
Vâcaftidan, vâcaftan, from vâcaft, from vâ- "away," → de- + caft "bent, curved, crooked," variants cafté, jafté, jaftâ.
The act or state of deflecting or the state of being deflected. Amount
Verbal noun of → deflect.
Fr.: angle de déflexion
1) The angle by which a light ray is curved by the gravitational field of a massive body.
Einstein's general relativity predicts that a light
ray which tangentially grazes the surface of the Sun is deflected by
1''.7. This result was confirmed in 1919 when
the apparent angular shift of stars close to the limb of the Sun was
measured during a total solar eclipse.
deflection of light
Fr.: déflexion de la lumière
The bending of a light ray under the gravitational effect of a massive body. → deflection angle.
To cause to deviate from accurate focus.
1) vâdisidan; 2) vâdisândan
Fr.: 1) se déformer; 2) déformer
Fr.: miroir déformable
A very thin mirror whose shape can be changed by the force applied by many small pistons behind the mirror. Such a mirror is used in the → adaptive optics technique to correct the → wavefront affected by the → atmospheric turbulence. See also → tip-tilt mirror.
vâdis, vâdiseš, vâdisâneš
Altering in the size or shape of a body. See also → deformable.
Verbal noun of → deform.
Past participle of → deform.
1) No longer in effect or use; not operating or functioning.
M.E., from O.Fr. defunct or directly from L defunctus "dead," literally "off-duty," from p.p. of defungi "to discharge, finish," from → de- "off, completely" + fungi "perform or discharge duty," from PIE root *bheug- "to enjoy" (cognates: Latin fructus).
Fr.: comète défunte
A comet that has lost its ability to emit dust and gas and no longer displays the classic cometary features of a nebulous coma and a tail, or a destroyed comet. Comet Pigott The asteroid (944) Hidalgo is considered by some to be a defunct comet because of its unusual orbit. Another case is the asteroid Phaethon.
Fr.: défuzzification, concrétisation
The process of producing a quantifiable result in a → fuzzy logic system, given → fuzzy sets and corresponding → membership functions. Defuzzification is the last step in a fuzzy logic system. After → fuzzy inferencing, the overall result is a → fuzzy value. This result should be defuzzified to obtain a final → crisp value.
1) General: Degenerate state or character. Reverting to an earlier, simpler, state.
From degener(ate), → degenerate, + -acy suffix of nouns of quality and state.
Vâgeni, from vâgen, → degenerate, + noun suffix -i.
fešâr-e vâgeni (#)
Fr.: pression de dégénérescence
Pressure in a degenerate electron or neutron gas. → degenerate matter.
Characterized by or associated with → degeneracy.
L. degeneratus, p.p. of degenerare "depart from one's kind, fall from ancestral quality," from → de- + gener-, stem of genus "race, stock, kind," gignere "to beget," cf. with Gk. genos "race, kind," gonos "birth, offspring," from PIE base *gen-/*gon-/*gn- "to produce, beget, be born," cf. Av. zan- "to bear, give birth to a child, be born," infinitive zazāite, zāta- "born," zana- "race" (in sruuô.zana- "belonging to the race of the horned ones"), O.Pers. zana- "tribe" (in paru-zana- "consisting of many tribes"), Skt. janati "begets, bears," jana- "creature, human being, race, tribe, people."
Vâgen, from vâ-, → de-, + gen "kind," (as in hamgen "of the same kind, like each other; friend, partner," from ham- "together," → com- + gen "kind," O.Pers./Av. zana- "race; tribe," cognate with L. genus, as above). Alternatively, gen may be a variant of Mid./Mod.Pers. gôn/gun "kind, type; manner; color, skin color," from Av. gaona- "hair, hair color, color."