acceleration

• POS: Noun
• HYPHEN: ac=cel=er=a=tion

CIDE DICTIONARY

acceleration, n. [L. acceleratio: cf. F. accélération.].

 The act of accelerating, or the state of being accelerated; increase of motion or action; as, a falling body moves toward the earth with an acceleration of velocity; -- opposed to retardation.  [1913 Webster]
"A period of social improvement, or of intellectual advancement, contains within itself a principle of acceleration."  [1913 Webster]

(Astr. & Physics.) Acceleration of the moon, the increase of the moon's mean motion in its orbit, in consequence of which its period of revolution is now shorter than in ancient times. -- Acceleration and retardation of the tides. See Priming of the tides, under Priming. -- Diurnal acceleration of the fixed stars, the amount by which their apparent diurnal motion exceeds that of the sun, in consequence of which they daily come to the meridian of any place about three minutes fifty-six seconds of solar time earlier than on the day preceding. -- Acceleration of the planets, the increasing velocity of their motion, in proceeding from the apogee to the perigee of their orbits.

OXFORD DICTIONARY

acceleration, n.
1 the process or act of accelerating or being accelerated.
2 an instance of this.
3 (of a vehicle etc.) the capacity to gain speed (the car has good acceleration).
4 Physics the rate of change of velocity measured in terms of a unit of time.

Etymology

F acc{eacute}l{eacute}ration or L acceleratio (as ACCELERATE)

THESAURUS

acceleration

accelerando, aggravation, beefing-up, blowing up, blowup, concentration, condensation, consolidation, deepening, double time, double-quick, double-quick time, drive, enhancement, exacerbation, exaggeration, explosion, festination, forced march, forwarding, getaway, hastening, heating-up, heightening, hurrying, impetus, information explosion, intensification, magnification, pickup, population explosion, quickening, redoubling, reinforcement, speeding, speedup, step-up, strengthening, thrust, tightening

ROGET THESAURUS

acceleration

Haste

N haste, urgency, despatch, dispatch, acceleration, spurt, spirt, forced march, rush, dash, speed, velocity, precipitancy, precipitation, precipitousness, impetuosity, brusquerie, hurry, drive, scramble, bustle, fuss, fidget, flurry, flutter, splutter, hasty, hurried, brusque, scrambling, cursory, precipitate, headlong, furious, boisterous, impetuous, hotheaded, feverish, fussy, pushing, in haste, in a hurry, in hot haste, in all haste, breathless, pressed for time, hard pressed, urgent, with haste, with all haste, with breathless speed, in haste, apace, amain, all at once, at short notice, immediately, posthaste, by cable, by express, by telegraph, by forced marches, hastily, precipitately, helter-skelter, hurry-skurry, holus-bolus, slapdash, slap-bang, full-tilt, full drive, heels over head, head and shoulders, headlong, a corps perdu, by fits and starts, by spurts, hop skip and jump, sauve qui peut, every man for himself, devil take the hindmost, no time to be lost, no sooner said than done, a word and a blow, haste makes waste, maggiore fretta minore atto, ohne Hast aber ohne Rast stand not upon the order, swift, swift, you dragons of the night.

Velocity

N velocity, speed, celerity, swiftness, rapidity, eagle speed, expedition, pernicity, acceleration, haste, spurt, rush, dash, race, steeple chase, smart rate, lively rate, swift rate, rattling rate, spanking rate, strapping rate, smart pace, lively pace, swift pace, rattling pace, spanking pace, strapping pace, round pace, flying, flight, lightning, greased lightning, light, electricity, wind, cannon ball, rocket, arrow, dart, hydrargyrum, quicksilver, telegraph, express train, torrent, eagle, antelope, courser, race horse, gazelle, greyhound, hare, doe, squirrel, camel bird, chickaree, chipmunk, hackee, ostrich, scorcher, Mercury, Ariel, Camilla, Harlequin, log, log line, speedometer, odometer, tachometer, strobe, radar speed detector, radar trap, air speed gauge, wind sock, wind speed meter, pedometer, fast, speedy, swift, rapid, quick, fleet, aliped, nimble, agile, expeditious, express, active, flying, galloping, light footed, nimble footed, winged, eagle winged, mercurial, electric, telegraphic, light-legged, light of heel, swift as an arrow, quick as lightning, quick as a thought, swiftly, with speed, apace, at a great rate, at full speed, at railway speed, full drive, full gallop, posthaste, in full sail, tantivy, trippingly, instantaneously, under press of sail, under press of canvas, under press of sail and steam, velis et remis, on eagle's wing, in double quick time, with rapid strides, with giant strides, a pas de geant, in seven league boots, whip and spur, ventre a terre, as fast as one's legs will carry one, as fast as one's heels will carry one, as fast as one can lay legs to the ground, at the top of one's speed, by leaps and bounds, with haste, vires acquirit eundo, I'll put a girdle about the earth in forty minutes, swifter than arrow from the Tartar's bow, go like a bat out of hell, tempus fugit.