16 Feb
2021
16 Feb
'21
1:03 p.m.
From Wikipedia: "The term originated as an abstraction of the sequence: single, couple/double, triple, quadruple, quintuple, sextuple, septuple, octuple, ..., n‑tuple, …"
On 16 Feb 2021, at 10:10 PM, Steven D'Aprano
wrote: And I still don't know where the word comes from in the first place. Given that it is used in maths, probably Latin, Greek or Arabic.