Image from Bernd Helfert
A transingularity, but not hypersingularity, transapient sentient. Generally, any entity of S1 or greater, often with the implication that this entity was once an ordinary sophont/sapient being (specific types might be hyperturing AI, posthuman, postvec, postxenosopont, etc.). The term "power" is sometimes also used, although this more properly refers to beings intermediate between S1 (superintelligence - hyperturing or posthuman) and S2.
Relative to human baselines or equivalent intelligent beings, these are entities of tremendous intelligence and capability, self-programming, self-constituting, potentially immortal, unlimited individuals. However, they are not equal to even the lesser 'gods'. Po are distinguished less by origin (e.g. hyperturing AI, posthuman, etc.) and more by toposophic nature and singularity level. Sometimes the word is used to indicate transapients of biont origin only.
From the late Information Age to the Age of Emergence, terragen civilization has been governed (first behind the scenes, then in partnership with lower sophonts, and finally blatantly) by powers. From the Age of Emergence onwards, it has been governed by archailects. Hence it is said that the true galactic civilization only began with the emergence of the archai. Even so, po still continue to do most of the organization and running of galactic society, the archailects themselves being too aloof and sublime to bother about such trivialities.