tri·skel·i·on (trī-skěl'ē-ən, trĭ-) n.
pl.tri·skel·i·a (-skěl'ē-ə) also tri·skeles A figure consisting of three curved lines or branches, or three stylized human arms or legs, radiating from a common center.
"figure consisting of three branchess radiating from a center," 1880, earlier triskelos (1857), from Gk. triskeles "three-legged," from tri- "three" + skelos "leg" (see scalene).