What does "skyrocket" mean?
"Skyrocket" is an action verb used to describe something with a strong or quick elevation or increase, much like how a rocket would fly high into the sky very quickly. You can think of it in this context as meaning "a very high/quick increase in demand for meal kits." Similar verbs include "soar" or "explode." Ex: Demand for meal kits has exploded during the pandemic. = Demand for meal kits has soared during the pandemic.