\kˌalkɐnˈiːəm], \kˌalkɐnˈiːəm], \k_ˌa_l_k_ɐ_n_ˈiː__ə_m]\
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By Stedman, Thomas Lathrop
By William R. Warner
By Henderson, I. F.; Henderson, W. D.
From calx, 'the heel.' Calca'neus, Calcar, Cal'cia, Ichnus, Os Calcis, Pterna, Pter'nium. The largest of the tarsal bones: that which forms the heel. It is situate at the posterior and inferior part of the foot; is articulated above and a little anteriorly with the astragalus; anteriorly, also, with the os cuboides. Its posterior surface-called Heel, Talus, Calx, (F.) Talon-gives attachment to the tendo-achillis: the lower has, posteriorly, two tuberosities, to which the superficial muscles of the sole of the foot are attached. The small Apoph'ysis or lateral Apophysis of the Calca'neiun, (F.) Petit Apophyse ou Apophyse laterale du Calcaneum, is a projection at the upper surface of this bone, on which is formed the posterior portion of the cavity that receives the astragalus. The great Apoph'ysis, anterior Apoph'ysis of the Calca'neum, is the projection which corresponds, on one side, with the cuboides; and on the other forms the anterior part of the facette which receives the astragalus.
By Robley Dunglison
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- Noting a compound containing four replaceable hydrogen atoms. acids or alcohols, containing four replaceable atoms of hydrogen.