When I worked at McDonald's in 2015, we called it Q-ing. That's what the official term was. We got in trouble for calling it anything else.

Microwave it, use it as a verb

Generally "nuke it" but occasionally zap make an appearance, microwave as a verb, and sometimes me-crow-wa-vay if I'm feeling extra

When I microwave something I generally say that I'm microwaving it.

Let's excite these water molecules until they vibrate so hard it generates heat that transfers to surrounding atoms

I use Nuke.

We speak Mandarin at home and microwave in Mandarin is 微波 "way bo" (literally means "micro wave"). To "microwave" as a verb usually gets shortened to the first character in colloquial speak. We 微 "way" our leftovers.

微波 means microwave as in that particular frequency range on the electromagnetic spectrum. When referring to the kitchen appliance as a noun, we specifically say 微波炉 "way bo lu" which means "microwave stove."

Additional fun fact: If you think it sounds like Weibo the website, you're right. It has almost the same pronounciation but has a tonal difference on the second character. Weibo means "micro blog," same first character but the second character is 博 which is a loan word for blog.

We say "ugh, there is too much stuff in front of the microwave, do you mind eating it cold?"

And I think that's beautiful.

I say microwave

Activate the magnetron!

Nuke it

Mick-rowave. Based on how Jen pronounces it in Bob's Burgers

Put it in the science oven!

I say "zap it" myself. idk it just rolls off the tongue really nice

"Nuke it for about 30"

Funnily enough, there is no single word for this in German of all languages. You just say "heat something up in the microwave". The standard verb form would be "mikrowellieren", but I've never heard anyone say that.

Gonna put it in the spicy light box

We "ding" the food

Zaaaap https://youtu.be/T1b6ko1I00A

I think I’ve used both zap and microwave.

Microwavé

Putting the food in the John McCain memorial hot box.

warm it