noun 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.
noun A continuous extent.
noun The nondenumerable set of real numbers; more generally, any compact connected metric space.
noun A touch-sensitive strip, similar to an electronic standard musical keyboard, except that the note steps are ⁄100 of a semitone, and so are not separately marked.