I, i | definition in the Cambridge English Dictionary
https://dictionary.cambridge.org/us/dictionary/english/i
WEBI, i noun [C or U] (NUMBER) (also i) the sign used in the Roman system for the number 1 and as part of the numbers 2 (ii), 3 (iii), 4 (iv), 6 (vi), 7 (vii), 8 (viii), and 9 (ix) SMART …
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