[TA] a small elevation on the orbital surface of the zygomatic bone, just within the orbital margin, about 1 cm below the zygomaticofrontal suture; attaches to the lateral check ligament, the lateral palpebral ligament, and the suspensory ligament of the eyeball. SYN: tuberculum orbitale ossis zygomatici [TA], eminentia orbitalis (ossis zygomatici), orbital eminence of zygomatic bone, Whitnall tubercle.