Definitions

1. adjective

resistant to being spoiled or going bad; able to be stored for a long time without deteriorating.

“These mealproof containers can be used for storing food for a week.”

2. adjective

able to withstand any meal or situation; capable of being used for any occasion.

“The versatile cookware is mealproof and can be used on the stovetop, oven, or grill.”