Recoil

v. rebound, kick back; flinch, wince, flinch, draw back

n. backlash, kickback, rebound; wince, flinch

This article is about backward momentum produced in firearms when fired. For other uses, go to Recoil (disambiguation) Recoil, in common everyday language, is considered the backward kick or force produced by a gun when it is fired. In more precise scientific terms, this force is equal to the derivative of the backward momentum resulting when a gun is fired.The backward momentum is equal to the mass of the gun times its reverse velocity. This backward momentum is equal to the sums of the two forward momentums by the law of conservation of momentum and is due to and equal to the projectile's mass times its velocity added to the mass of the escaping gases, burnt propellant, unburnt propellant, and other gases, times their respective velocities. Provided that enough information is known for how all the velocities vary versus time, it becomes theoretically possible to determine all the accelerations versus time, and hence to calculate the total recoil force versus time. The force associated with the recoil may thus be calculated by using the law of conservation of momentum, provided that enough information regarding changes in momentum versus time is known. In practice, however, it is often easier simply to measure the recoil force resulting for a given load, rather than to estimate all the variations occurring in momentum versus time.
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Noun
1. the backward jerk of a gun when it is fired
(synonym) kick
(hypernym) movement, motion
(derivation) kick back, kick
2. a movement back from an impact
(synonym) repercussion, rebound, backlash
(hypernym) movement, motion
(hyponym) bounce, bouncing
(derivation) bounce, resile, take a hop, spring, bound, rebound, reverberate, ricochet
Verb
1. draw back, as with fear or pain; "she flinched when they showed the slaughtering of the calf"
(synonym) flinch, squinch, funk, cringe, shrink, wince, quail
(hypernym) move
(hyponym) shrink back, retract
2. spring back; spring away from an impact; "The rubber ball bounced"; "These particles do not resile but they unite after they collide"
(synonym) bounce, resile, take a hop, spring, bound, rebound, reverberate, ricochet
(hypernym) jump, leap, bound, spring
(hyponym) kick back, kick
(derivation) repercussion, rebound, backlash
3. spring back, as from a forceful thrust; "The gun kicked back into my shoulder"
(synonym) kick back, kick
(hypernym) bounce, resile, take a hop, spring, bound, rebound, reverberate, ricochet
(derivation) kick

(v. t.)
To draw or go back.
  

(v. i.)
To turn or go back; to withdraw one's self; to retire.
  

(v. i.)
To start, roll, bound, spring, or fall back; to take a reverse motion; to be driven or forced backward; to return.
  

(v. i.)
To draw back, as from anything repugnant, distressing, alarming, or the like; to shrink.
  

(n.)
The state or condition of having recoiled.
  

(n.)
Specifically, the reaction or rebounding of a firearm when discharged.
  

(n.)
A starting or falling back; a rebound; a shrinking; as, the recoil of nature, or of the blood.
  

Synonyms and related words:
about the bush, antagonism, antipathy, avoid, avoidance, backfire, backlash, backlashing, backwash, balk, bashfulness, beat around, beg the question, blanch, blench, blink, boggle, boggling, boomerang, bounce, bounce back, bound, bound back, cannon, cannon off, carom, clashing, clout, collision, comeback, compunction, conflict, confutation, contradiction, contraposition, contrariety, contrecoup, counter, counteraction, counterblast, counterblow, counterposition, counterstroke, counterworking, crankiness, cringe, crotchetiness, demur, demurral, diffidence, disapprove of, dissent, dodge, draw back, duck, equivocate, evade, evasion, exchange, fade, fall back, fallback, falter, faltering, fence, fight shy of, flinch, fly back, force, friction, funk, give-and-take, grimace, hang back, hang off, have qualms, have repercussions, hedge, hem and haw, hesitance, hesitancy, hesitate, hesitation, hold off, impact, impress, impression, imprint, interchange, interference, jib, kick, kick back, kickback, lash back, look askance at, make bones about, mark, modesty, nonconformity, objection, opposition, opposure, oppugnance, oppugnancy, parry, pause, perverseness, print, protest, pull away, pull back, pullback, pullout, pussyfoot, put off, quail, quake, qualm, qualm of conscience, qualmishness, reaction, rebound, rebuff, recalcitrance, recalcitrate, recalcitration, reciprocation, reel back, reflex, renitency, repercuss, repercussion, reply, repugnance, repulse, resile, resilience, resistance, response, retaliation, retort, retreat, return, revolt, revolt at, ricochet, scruple, scrupulosity, scrupulousness, shake, sheer off, shift, shift off, show distaste for, shrink, shrink back, shrink from, shrinking, shudder, shudder at, shy, shy at, shy away, shy off, shyness, sidestep, sidestepping, snap back, spring, spring back, squinch, start, start aside, start back, step aside, stick, stick at, stickle, stickling, strain, swerve, swimming upstream, tremble, turn aside, ward off, waver, weasel, weasel out, wince