oro-analadj.
/ˌɔːrəʊˈeɪnl/, U.S. /ˌɔroʊˈeɪn(ə)l/ Biology and Medicine.† 1. Zoology. Of an orifice of a digestive system: serving as both mouth and anus. Obsolete. rare.
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > adapted for mastication > serving as mouth and anus
oro-anal1872
1872 H. A. Nicholson Man. Palæontol. 131 The question is narrowed to its being the anus alone, or an ‘oro-anal’ orifice.
1876 H. A. Nicholson Man. Zool. 159 The view..that this aperture was the mouth, appears from every point of view to be most probably correct; or rather it was oro-anal.
2. Biology and Medicine. Connecting or extending between the mouth and anus; involving the mouth and anus.
ΘΚΠ
the world > life > the body > digestive or excretive organs > digestive organs > mouth > [adjective]
oral1631
post-oral1853
oro-anal1885
orolingual1891
the world > life > the body > digestive or excretive organs > digestive organs > intestines > [adjective] > rectum > relating to anus and specific parts
anococcygeal1880
anorectal1884
oro-anal1885
anogenital1909
1885 E. R. Lankester in Encycl. Brit. XIX. 434/2 A new long axis is..established at right angles to the original oro-anal axis.
1927 Proc. Royal Soc. 101 p. xxxvii To the newer conception of the cranial and sacral outflows of visceral nerve-fibres and their connected ganglia, as belonging to a system, which Langley called ‘oro-anal’, different in origin, distribution and function from the thoracico-lumbar sympathetic system.
1989 Amer. Jrnl. Gastroenterol. 84 888 All patients showed a prolonged whole gut (oroanal) transit time as measured with radiopaque markers.
2000 Proc. National Acad. Sci. U.S.A. 97 4841/2 No such association was found for anogenital or oroanal sex.
This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).
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adj.1872