say it: buh-LI-stiks
ballistics is a noun meaning "the trajectory of an object in free flight". It carries 2 recorded senses.
the trajectory of an object in free flight
the science of flight dynamics
Forms marked are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for ballistics come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.