used to refer to the largest size of meal or drink available in a fast food restaurant

very large

Unhealthy food is producing supersized kids. 不健康的食品产生体型超大的儿童。

to give a customer in a fast food restaurant the largest size of meal or drink

"A burger and a Coke please." "Can I supersize it for you?" “来一个汉堡和一杯可乐。”“您要超大份的吗?”

to increase a lot in size, or to make something increase a lot in size

We offer tips on how to supersize your business. 我们提供如何使贵公司业务大大增加的技巧。