physics A brief event in which two or more bodies come together:
— The collision of the particles resulted in an exchange of energy and a change of direction.

synonym: hit.

Roget 720: contention, strife; contest, contestation^†; struggle; belligerency; opposition etc. 708.    controversy, polemics; debate etc. (discussion) 476; war of words, logomachy^†, litigation; paper war; high words etc. (quarrel) 713; sparring etc. v.. competition, rivalry; corrivalry^†, corrivalship^†, agonism^†, concours^†, match, race, horse racing, heat, steeple chase, handicap; regatta; field day; sham fight, Derby day; turf, sporting, bullfight, tauromachy^†, gymkhana^†; boat race, torpids^†.    wrestling, greco-roman wrestling; pugilism, boxing, fisticuffs, the manly art of self-defense; spar, mill, set-to, round, bout, event, prize fighting; quarterstaff, single stick; gladiatorship^†, gymnastics; jiujitsu, jujutsu, kooshti^†, sumo; athletics, athletic sports; games of skill etc. 840.    shindy^†; fracas etc. (discord) 713; clash of arms; tussle, scuffle, broil, fray; affray, affrayment^†; velitation^†; colluctation^†, luctation^†; brabble^†, brigue^†, scramble, melee, scrimmage, stramash^†, bushfighting^†.    free fight, stand up fight, hand to hand, running fight.    conflict, skirmish; rencounter^†, encounter; rencontre^†, collision, affair, brush, fight; battle, battle royal; combat, action, engagement, joust, tournament; tilt, tilting [Mediev.]; tournay^†, list; pitched battle.    death struggle, struggle for life or death, life or death struggle, Armageddon^†.    hard knocks, sharp contest, tug of war.    naval engagement, naumachia^†, sea fight.    duel, duello [It]; single combat, monomachy^†, satisfaction, passage d'armes [Fr.], passage of arms, affair of honor; triangular duel; hostile meeting, digladiation^†; deeds of arms, feats of arms; appeal to arms etc. (warfare) 722.    pugnacity; combativeness etc. adj.; bone of contention etc. 713.    ... show more

Roget 708: opposition, antagonism; oppugnancy^†, oppugnation^†; impugnation^†; contrariety; contravention; counteraction etc. 179; counterplot.    cross fire, undercurrent, head wind.    clashing, collision, conflict.    competition, two of a trade, rivalry, emulation, race.    absence of aid etc. 708; resistance etc. 719; restraint etc. 751; hindrance etc. 706.    ... show more

Roget 276: impulse, impulsion, impetus; momentum; push, pulsion^†, thrust, shove, jog, jolt, brunt, booming, boost [U.S.], throw; explosion etc. (violence) 173; propulsion etc. 284.    percussion, concussion, collision, occursion^†, clash, encounter, cannon, carambole^†, appulse^†, shock, crash, bump; impact; elan; charge etc. (attack) 716; beating etc. (punishment) 972.    blow, dint, stroke, knock, tap, rap, slap, smack, pat, dab; fillip; slam, bang; hit, whack, thwack; cuff etc. 972; squash, dowse, swap, whap^†, punch, thump, pelt, kick, punce^†, calcitration^†; ruade^†; arietation^†; cut, thrust, lunge, yerk^†; carom, carrom^†, clip [Slang], jab, plug [Slang], sidewinder [U.S.], sidewipe^†, sideswipe [U.S.].    hammer, sledge hammer, mall, maul, mallet, flail; ram, rammer^†; battering ram, monkey, pile-driving engine, punch, bat; cant hook; cudgel etc. (weapon) 727; ax etc. (sharp) 253.    [Science of mechanical forces] dynamics; seismometer, accelerometer, earthquake detector.    ... show more

Roget 179: counteraction, opposition; contrariety etc. 14; antagonism, polarity; clashing etc. v.; collision, interference, inhibition, resistance, renitency, friction; reaction; retroaction etc. (recoil) 277; counterblast^†; neutralization etc. (compensation) 30; vis inertiae [Lat.]; check etc. (hindrance) 706.    voluntary opposition etc. 708, voluntary resistance etc. 719; repression etc. (restraint) 751.    opposites, action and reaction, yang and yin, yang-yin (contrariety) 14.    ... show more

An accident resulting from violent impact of a moving object.

Dutch: botsing, aanrijding, aanvaring

A conflict of opposed ideas or attitudes or goals.

Polish: kolizja