Plural form of duodecillion; multiple instances of the number 10 to the 39th power.
From duodecillion + '-s' (plural marker). The plural form maintains the same etymological root as the singular, simply indicating more than one such quantity.
When you need to talk about multiple impossibly huge numbers, you're probably deep in theoretical physics or computer science—these words rarely appear in everyday speech, which is why they feel so strange to most people!
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