IPA: /ˈlɔːnʧpæd/
KK: /ˈlɔːnʧpæd/
A platform or surface used for launching rockets, vehicles, or missiles into the air.
The rocket was prepared for takeoff on the launchpad.
Launchpad → It is formed from "launch" (from Old French *lancer*, meaning to throw or hurl) and "pad" (from Old English *pædd*, meaning a flat surface or platform). The word "launchpad" refers to a flat surface or platform from which something is thrown or hurling into the air, typically used for rockets or spacecraft.
Think of a 'platform' ('pad') that helps to 'throw' ('launch') something into the air — that's what a launchpad is.