bal·lis·tics 
(bə-lĭstĭks)
(bə-lĭstĭks)n. (used with a sing. verb)
1.
a. The study of the dynamics of projectiles.
b. The study of the flight characteristics of projectiles.
2.
a. The study of the functioning of firearms.
b. The study of the firing, flight, and effects of ammunition.
adj.
Of, relating to, or engaging in the study of ballistics: a ballistics lab; ballistics experts.
bal′lis·tician (băl′ĭ-stĭshən) n.