microwave inflation
the [microwave] at my dorm room is older than the one at my house, so when i make a bag of popcorn, i have to adjust for microwave inflation
when the cooking time of food needs to be adjusted to account for a weaker or stronger microwave
"the [microwave] at my dorm room is older than the one at my house, so when i make a bag of popcorn, i have to adjust for microwave inflation" What is the definition of "microwave inflation"?