ballistics

noun

bal·​lis·​tics bə-ˈli-stiks How to pronounce ballistics (audio)
plural in form but singular or plural in construction
1
a
: the science of the motion of projectiles in flight
b
: the flight characteristics of a projectile
2
a
: the study of the processes within a firearm as it is fired
b
: the firing characteristics of a firearm or cartridge

Word History

Etymology

New Latin ballisticus ballistic + -ics, after New Latin ballistica

First Known Use

1675, in the meaning defined at sense 1a

Time Traveler
The first known use of ballistics was in 1675

Cite this Entry

“Ballistics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ballistics. Accessed 12 Sep. 2025.

Kids Definition

ballistics

noun singular or plural
bal·​lis·​tics bə-ˈlis-tiks How to pronounce ballistics (audio)
1
: the science that deals with the motion of objects (as bullets or rockets) that are thrown or driven forward
2
: the flight characteristics of an object (as a bullet or rocket) that is thrown or driven forward

Legal Definition

ballistics

noun plural but singular or plural in construction
bal·​lis·​tics bə-ˈlis-tiks How to pronounce ballistics (audio)
1
a
: the science of the motion of projectiles (as bullets) in flight
b
: the flight characteristics of a projectile (as a bullet)
2
: the study of the processes within a firearm as it is fired

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