orthogradeadj.
/ˈɔːθə(ʊ)ɡreɪd/, U.S. /ˈɔrθoʊˌɡreɪd/ Zoology.
Of a primate: holding the body upright; (of posture) erect. Contrasted with pronograde.
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orthograde1902
the world > life > biology > physical aspects or shapes > physical arrangement or condition > [adjective] > holding body upright
orthograde1902
1902 A. Keith in Jrnl. Anat. & Physiol. 37 18 He [sc. the author] regards the primates as divided into two very distinct groups—those which carry the axis of the body in a horizontal position—the Pronograde Primates..; and those which carry the axis of the body in an upright position—the Orthograde Primates, into which group fall the gibbon, orang, chimpanzee, gorilla, and man.
1925 J. Laird Our Minds & their Bodies 46 An orthograde (or erect) animal, like man.
1973 B. J. Williams Evol. & Human Origins viii. 114/1 Man being completely orthograde has a recurved spine that bends back sharply in the lumbar region.
1996 Nature 11 Jan. 157/2 Several features of the trunk of Dryopithecus suggest adaptation for orthograde postures.
This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).
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adj.1902