Definition of hallux in English:



  • 1A person's big toe.

    • ‘A hallux digital pressure is considered normal at 50 mm Hg; values of 30 mm Hg or lower are indicative of a significant decease in peripheral perfusion.’
    • ‘Chen et al. measured peak pressures under the heel, the medial forefoot, and the hallux of 290 kPa, 390 kPa, and 380 kPa.’
    • ‘For example, the points on the halluces connect with the head, and the middle of the foot reflects the bowels.’
    • ‘The different areas were the medial and lateral heel; the medial and lateral midfoot; the medial, central, and lateral forefoot; the hallux; the second toe; and the lateral toes.’
    • ‘A bunion occurs as a result of a deformity in the big toe known as hallux valgus, where hallux means the big toe and valgus means abnormal bending towards the other toes.’
    1. 1.1Zoology The innermost digit of the hind foot of vertebrates.
      • ‘They have an opposable hallux on their hind feet, and their pelage is soft, thick, and wooly.’
      • ‘Most of the fossil tracks show three slender toes tipped by small claws, but some also bear the imprint of a small, rear-facing toe called a hallux.’
      • ‘Several interaction terms were significant in analyses of mass, hallux length, and tarsal length and width.’
      • ‘Arnold says that ‘some birds, such as gulls, lose the external hallux entirely,’ yet all gulls have an external hallux, although it is very reduced in the two species of kittiwakes.’
      • ‘The first toe subsequently re-evolved a lower position within birds with the evolution of the grasping hallux.’


Mid 19th century: modern Latin alteration of medieval Latin allex, Latin hallus.