sparticle
n.— «Among the many possibilities proposed for what’s often called “new physics” is that the universe actually consists of tiny strands (or strings) of energy; that it contains several dimensions beyond those that we perceive; that it is full of mysterious particles—“sparticles”—that have yet to be detected; that it is not a universe at all but a multiverse; and that it began not with a bang but with a splat.» —“Crash Course” by Elizabeth Kolbert New Yorker May 14, 2007. (source: Double-Tongued Dictionary)