IPA: /ˈdʒɛtɪsənəbl/
KK: /ˈdʒɛtɪsənəbl/
Able to be thrown away or discarded, especially in order to lighten a load or remove something unnecessary.
The cargo was deemed jettisonable to ensure the safety of the flight.
Jettisonable → It is formed from "jettison" (from Old French *geter*, meaning to throw) and the suffix "-able" (meaning capable of). The word "jettisonable" means capable of being thrown away or discarded.
Think of something that can be 'thrown away' ('jettison') — the '-able' means it can be done. This helps you remember that 'jettisonable' refers to something that can be discarded.