Expressing, containing, or consisting of a negation, refusal, or denial.
From O.Fr. negatif (fem. negative), from L. negativus, "denying, inhibiting (legal actions); denied/refused; negative," from negare "to refuse, say 'no'" from Old L. nec "not", from Italic base *nek- "not," from PIE base *ne- "no, not."
Nâyidâr, from nâyidan, → negate, on the model of xaridâr, foruxtâr, xâstâr, virâstâr, etc.
Fr.: charge négative
An electric charge that has the same sign as the electron.
Fr.: corrélation négative
A correlation between two variables such that as one variable's values tend to increase, the other variable's values tend to decrease.
Fr.: cristal négatif
A uniaxial, birefringent crystal in which the velocity of the extraordinary ray surpasses that of the ordinary ray.
Fr.: rétroaction negative
Fr.: lentille divergente
Same as → divergent lens.
Fr.: nombre négatif
Fr.: polarisation négative
A type of polarization in which the direction of polarization becomes reversed.
Fr.: pression négative
A kind of pressure that contrarily to ordinary pressure pushes inward. In contrast with the → Newtonian mechanics, in → general relativity there are situations in which pressure can be negative. Positive pressure gives rise to attractive gravity, whereas negative pressure creates → repulsive gravity.
Fr.: asymétrie négative
Of a distribution function, a skewness in which the left tail (tail at small end of the distribution) is more pronounced that the right tail (tail at the large end of the distribution). → positive skewness.