deage
The term "deage" is not a recognized word in the English language, nor does it appear to be a widely adopted slang term or a specific technical term within any established field. It is possible that "deage" is a typographical error for a similar-sounding word, a neologism, or a term specific to a very niche context that is not broadly documented.
Without further context, it is difficult to provide a definitive explanation. If "deage" was intended to be
Alternatively, "deage" might be a portmanteau, a word blending the sounds and meanings of two others, or