(n.) The time when the sun enters one of the equinoctial points, that is, about March 21 and September 22. See Autumnal equinox, Vernal equinox, under Autumnal and Vernal.
(n.) Equinoctial wind or storm.
Example Sentences:
(1) Dose rates are integrated with respect to time to obtain estimates of mean doses for various periods during clear days at Rockville in mid summer and near the autumnal equinox.
(2) The date of the spring equinox varies from 19 to 21 March depending on location and corrections due to the mismatch between the Gregorian calendar, which logs 365 days a year, and the duration of Earth's orbit around the sun, which takes 365.25 days to complete.
(3) Plasma melatonin was measured at the summer and winter solstices and the autumn and spring equinoxes in Romney Marsh sheep held under natural conditions in South Australia (35 degrees S).
(4) Female Suffolk sheep were pinealectomized around the vernal equinox to eliminate the major environmental input to the reproductive system (photoperiod) and then either isolated from, or maintained with, pineal-intact gonad-intact sheep.
(5) At 6-14 days after each of the solstices and equinoxes, six females were exposed to a photoperiod equivalent to the natural day length at these times.
(6) Seven out of 14 acrophases of cyclic indices occurred just before autumnal equinox and three before vernal equinox.
(7) While the equinox signals a time when day and night are equal, the moment when both share 12 hours apiece happens days earlier, because of atmospheric effects.
(8) At approximately the spring and autumn equinox and the summer and winter solstice, rats were killed at 3-h intervals over a 24 h period and their serum thyroxine (T4), triiodothyronine (T3) and reverse T3 levels were determined.
(9) At higher latitudes, where changes in daylength are pronounced, a steep increase in human conceptions coincides with the vernal equinox.
(10) With less than a week to go until the Sun crosses northwards over the equator at the vernal equinox, it is showing real signs of rebirth in another respect.
(11) Downstream of the zone, a man called Sanders arrives at a remote town called Port Matarre just before the equinox.
(12) In a group of six rams, the seasonal changes of melatonin were characterized in samples collected at 10-min intervals for an equal period before and after the median of the scotophase during the spring (March) and the autumn (September) equinoxes, and also during the summer (June) and the winter (December) solstices.
(13) The mitotic activity in the adenohypophysis of male rats during a 24 hours' cycle has been studied at the time of the spring equinox.
(14) Shortly after the autumnal equinox, three groups of ovariectomized ewes bearing s.c. Silastic implants of estradiol were placed in different lighting environments.
(15) In both stations, at solstice and equinox, thirty 15 month-old Holstein bulls were blood sampled for plasma LH, testosterone, thyroxine and triiodothyronine determination.
(16) Swedish law would not allow them to be sued in Sweden, but the British publishers of the paper, Equinox, withdrew it under the threat of a libel suit in the English courts.
(17) Interpreted according to this hypothesis, the sexual cycle of the mink under natural photoperiodic conditions is also explained by seasonal gonadotropic stimulation beginning after the autumn equinox when in our latitudes daily light duration is less than 12 hr.
(18) At the equinoxes and solstices, unrestricted subjects had hourly urine collections followed by venous blood sampling taken under natural light conditions for 24 hours.
(19) For those in the southern hemisphere, the same equinox marks the arrival of autumn and longer nights.
(20) The rats were analyzed at 3 h intervals during 24 h approximately at the time of the vernal and autumnal equinox and at the winter and summer solistice.
Fall
Definition:
(v. t.) To Descend, either suddenly or gradually; particularly, to descend by the force of gravity; to drop; to sink; as, the apple falls; the tide falls; the mercury falls in the barometer.
(v. t.) To cease to be erect; to take suddenly a recumbent posture; to become prostrate; to drop; as, a child totters and falls; a tree falls; a worshiper falls on his knees.
(v. t.) To find a final outlet; to discharge its waters; to empty; -- with into; as, the river Rhone falls into the Mediterranean.
(v. t.) To become prostrate and dead; to die; especially, to die by violence, as in battle.
(v. t.) To cease to be active or strong; to die away; to lose strength; to subside; to become less intense; as, the wind falls.
(v. t.) To issue forth into life; to be brought forth; -- said of the young of certain animals.
(v. t.) To decline in power, glory, wealth, or importance; to become insignificant; to lose rank or position; to decline in weight, value, price etc.; to become less; as, the falls; stocks fell two points.
(v. t.) To be overthrown or captured; to be destroyed.
(v. t.) To descend in character or reputation; to become degraded; to sink into vice, error, or sin; to depart from the faith; to apostatize; to sin.
(v. t.) To become insnared or embarrassed; to be entrapped; to be worse off than before; asm to fall into error; to fall into difficulties.
(v. t.) To assume a look of shame or disappointment; to become or appear dejected; -- said of the countenance.
(v. t.) To sink; to languish; to become feeble or faint; as, our spirits rise and fall with our fortunes.
(v. t.) To pass somewhat suddenly, and passively, into a new state of body or mind; to become; as, to fall asleep; to fall into a passion; to fall in love; to fall into temptation.
(v. t.) To happen; to to come to pass; to light; to befall; to issue; to terminate.
(v. t.) To come; to occur; to arrive.
(v. t.) To begin with haste, ardor, or vehemence; to rush or hurry; as, they fell to blows.
(v. t.) To pass or be transferred by chance, lot, distribution, inheritance, or otherwise; as, the estate fell to his brother; the kingdom fell into the hands of his rivals.
(v. t.) To belong or appertain.
(v. t.) To be dropped or uttered carelessly; as, an unguarded expression fell from his lips; not a murmur fell from him.
(v. t.) To let fall; to drop.
(v. t.) To sink; to depress; as, to fall the voice.
(v. t.) To diminish; to lessen or lower.
(v. t.) To bring forth; as, to fall lambs.
(v. t.) To fell; to cut down; as, to fall a tree.
(n.) The act of falling; a dropping or descending be the force of gravity; descent; as, a fall from a horse, or from the yard of ship.
(n.) The act of dropping or tumbling from an erect posture; as, he was walking on ice, and had a fall.
(n.) Death; destruction; overthrow; ruin.
(n.) Downfall; degradation; loss of greatness or office; termination of greatness, power, or dominion; ruin; overthrow; as, the fall of the Roman empire.
(n.) The surrender of a besieged fortress or town ; as, the fall of Sebastopol.
(n.) Diminution or decrease in price or value; depreciation; as, the fall of prices; the fall of rents.
(n.) A sinking of tone; cadence; as, the fall of the voice at the close of a sentence.
(n.) Declivity; the descent of land or a hill; a slope.
(n.) Descent of water; a cascade; a cataract; a rush of water down a precipice or steep; -- usually in the plural, sometimes in the singular; as, the falls of Niagara.
(n.) The discharge of a river or current of water into the ocean, or into a lake or pond; as, the fall of the Po into the Gulf of Venice.
(n.) Extent of descent; the distance which anything falls; as, the water of a stream has a fall of five feet.
(n.) The season when leaves fall from trees; autumn.
(n.) That which falls; a falling; as, a fall of rain; a heavy fall of snow.
(n.) The act of felling or cutting down.
(n.) Lapse or declension from innocence or goodness. Specifically: The first apostasy; the act of our first parents in eating the forbidden fruit; also, the apostasy of the rebellious angels.
(n.) Formerly, a kind of ruff or band for the neck; a falling band; a faule.
(n.) That part (as one of the ropes) of a tackle to which the power is applied in hoisting.
Example Sentences:
(1) In the fall of 1975, 1,915 children in grades K through eight began a school-based program of supervised weekly rinsing with 0.2 percent aqueous solution of sodium fluoride in an unfluoridated community in the Finger Lakes area of upstate New York.
(2) In all groups, there was a fall in labeling index with time reflecting increasing tumor size.
(3) McDonald said cutting better deals with suppliers and improving efficiency as well as raising some prices had only partly offset the impact of sterling’s fall against the dollar.
(4) In the clinical trials in which there was complete substitution of fat-modified ruminant foods for conventional ruminant products the fall in serum cholesterol was approximately 10%.
(5) Rise time and fall time constants have been quantified for describing kinetics of response.
(6) Elderly women need to follow the same strategies as postmenopausal women with more emphasis on prevention of falls.
(7) In the 153 women to whom iron supplements were given during pregnancy, the initial fall in haemoglobin concentration was less, was arrested by 28 weeks gestation and then rose to a level equivalent to the booking level.
(8) It is suggested that the rapid phase is due to clearance of peptides in the circulation which results in a fall to lower blood concentrations which are sustained by slow release of peptide from binding sites which act as a depot.
(9) Defibrotide prevents the dramatic fall of creatine phosphokinase activity in the ischemic ventricle: metabolic changes which reflect changes in the cells affected by prolonged ischemia.
(10) Though the 54-year-old designer made brief returns to the limelight after his fall from grace, designing a one-off collection for Oscar de la Renta last year , his appointment at Margiela marks a more permanent comeback.
(11) Addition of extracellular mevalonate led to a concentration-dependent fall in both processes, although a higher concentration was required to produce the same effect on LDL degradation as on HMG-CoA reductase activity.
(12) The fall of the cell number in the liquor cerebrospinalis was more rapidly in the GAGPS treatment.
(13) With fields and fells already saturated after more than four times the average monthly rainfall falling within the first three weeks of December, there was nowhere left to absorb the rainfall which has cascaded from fields into streams and rivers.
(14) The asthma group's fall in FEV1 was also abolished.
(15) Undaunted by the sickening swell of the ocean and wrapped up against the chilly wind, Straneo, of Woods Hole Oceanographic Institution, one of the world's leading oceanographic research centres, continues to take measurements from the waters as the long Arctic dusk falls.
(16) This transient paresis was accompanied by a dramatic fall in the MFCV concomitant with a shift of the power spectrum to the lower frequencies.
(17) As many girls as boys receive primary and secondary education, maternal mortality is lower and the birth rate is falling .
(18) Compliance during dehydration was 7.6 and 12.5% change in IFV per millimeter Hg fall in IFP (micropipettes) in skin and muscle, respectively, whereas compliance in subcutis based on perforated capsule pressure was 2.0% change in IFV per millimeter Hg.
(19) The fall of a tyrant is usually the cause of popular rejoicing followed by public vengeance.
(20) If women psychiatrists are to fill some of the positions in Departments of Psychiatry, which will fall vacant over the next decade, much more attention must be paid to eliminating or diminishing the multiple obstacles for women who chose a career in academic psychiatry.