Having equal differences or intervals between successive elements.
From Latin 'aequus' (equal) + 'differentia' (difference). Used to describe arithmetic sequences or evenly spaced items.
An equidifferent sequence like 2, 5, 8, 11, 14 has the same gap (3) between every pair of neighboring numbers—that's why they're called arithmetic progressions and show up constantly in music scales, fence posts, and calendar dates.
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