IPA: /ˈrɒkɪtri/
KK: /ˈrɑːkɪtri/
The field that involves the design, building, and launching of rockets.
He is studying rocketry to become a rocket scientist.
Rocketry → It is formed from "rocket" (from Italian *rocchetta*, meaning a little bobbin or spool, which refers to the shape of early rockets) and "-ry" (a suffix denoting a field of study or practice). The word "rocketry" refers to the field or practice of designing and building rockets.
Think of the word 'rocket' which refers to the device itself, and the suffix '-ry' indicating a field of study, helping you remember that rocketry is the study or practice of rockets.