prefrozen
/ˈrɛfˌfrəʊzən/Definitions
1. adjective
Already frozen before being used or stored
“The prefrozen meal was convenient for a quick dinner.”
2. noun
A food that is already frozen before being sold or served
“She bought a prefrozen pizza for the party.”
3. verb
To freeze something before using or storing it
“The company prefroze the vegetables to extend their shelf life.”