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perignathic
perignathic adj.
Brit. 
/ˌpɛrᵻɡˈnaθɪk/
, /ˌpɛrᵻɡˈnaθɪk/U.S. /ˌpɛrəɡˈnæθɪk/
situated around the jaws; spec. designating a girdle of processes surrounding the mouth of a sea urchin, which serves as the site of attachment of the muscles of the chewing apparatus./ˌpɛrəɡˈnæθɪk/ΚΠ
1885 Athenæum 4 Dec. 736 He suggests the substitution of the term ‘perignathic girdle’.
1962 D. Nichols Echinoderms v. 66 Round the mouth is a strong perignathic girdle consisting of modified ambulacral and interambulacral plates.
1995 Philos. Trans. (Royal Soc.) B. 347 229/2 Perignathic girdle more or less pentaradially symmetric.
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as lemmas
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