Continuum

Noun

 * 1) A continuous series or whole, no part of which is noticeably different from its adjacent parts, although the ends or extremes of it are very different from each other.
 * 2)  The set of all real numbers and, more generally, a compact connected metric space.
 * 3)  A touch sensitive strip, similar to a standard electronic musical keyboard, except that the note steps are $1/undefined$ of a semitone, and so are not separately marked.

Thesaurus
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