[sesuximo]

Apu already taken by aviation tho

[Uvix]

And by AMD (Accelerated Processing Unit, their term for CPUs with good integrated graphics like what Xbox and PlayStation consoles use).

[whamlastxmas]

And The Simpsons

[k8sToGo]

So is GPU (Ground power unit)

[Dalewyn]

Auxiliary Power Unit.

Both aviation and computers use them, though the latter more often call them UPS (Uninterruptible Power Supply).

[bogwog]

Let's be real, nobody cares about their acronyms being unique or not confusing.

[Dalewyn]

But that's not what parent comment was talking about.