post-oraladj.
/ˌpəʊstˈɔːrəl/, /ˌpəʊstˈɔːrl̩/, U.S. /ˌpoʊstˈɔr(ə)l/, /ˌpoʊstˈoʊr(ə)l/ Anatomy and Zoology.
Situated behind or posterior to the mouth. Opposed to pre-oral.
ΘΚΠ
the world > life > the body > digestive or excretive organs > digestive organs > mouth > [adjective]
oral1631
post-oral1853
oro-anal1885
orolingual1891
the world > animals > invertebrates > phylum Arthropoda > [adjective] > of parts of > (of parts of head) behind mouth
post-oral1853
the world > animals > animal body > general parts > [adjective] > situated behind the mouth
post-oral1895
1853 B. F. Shumard in R. B. Marcy & G. B. McClellan Explor. Red River (U.S. War Dept.) App. E. 210 Hemiaster elegans... Post oral tuberculated space lanceolate.
1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 491 [The head in Arthropoda] consists of a prae-oral or pro-cephalic region, to which are fused a variable number of post-oral somites.
1895 New Sydenham Soc. Lexicon Post-oral arches, the five subcranial plates which lie below (on the caudal side of) the mouth in the embryo, going to form the lower jaw and throat.
1930 H. G. Newth Marshall & Hurst's Junior Course Pract. Zool. (ed. 11) v. 54 (caption) G1, the first of the twenty-three post-oral ganglia.
1969 R. F. Chapman Insects i. 3 The head is derived from..a number of post-oral segments.
1995 C. Nielsen Animal Evol. xv. 112 Ontogenetically, the molluscan foot develops as a specialization of the gastrotroch area..and is thus postoral and not circumoral.
Derivatives
post-ˈorally adv. in a post-oral position or direction.
ΚΠ
1904 Amer. Naturalist 38 785 The antennal rudiments..are pushed more markedly post-orally.
1987 M. S. Laverack & J. Dando Lect. Notes Invertebr. Zool. (ed. 3) xix. 95 (caption) Metamorphosing larva of Echiurus indicating..the position of chaetae post-orally.
This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022).
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adj.1853