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medio-palatal
medio-palatal adj. 
/ˌmiːdɪə(ʊ)pəˈleɪtl/,
Brit. /ˌmiːdɪə(ʊ)ˈpalətl/
, /ˌmiːdɪə(ʊ)ˈpalətl//ˌmiːdɪə(ʊ)pəˈleɪtl/U.S. /ˌmidioʊˈpæləd(ə)l/
[compare French médiopalatal (1899)] Phonetics articulated with the tongue against the middle part of the hard palate; designating this part of the palate./ˌmidioʊˈpæləd(ə)l/ΘΚΠ
the mind > language > linguistics > study of speech sound > speech sound > speech sound by place or organ > [adjective] > palatal
palatine1656
linguapalatal1668
palatal1668
palatic1669
linguopalatal1818
anterior1830
soft1832
mouillé1833
palato-dental1844
palatalized1872
palato-velar1895
postpalatal1898
medio-palatal1900
clear1918
alveolo-palatal1928
lamino-palatal1966
1900 Mod. Lang. Notes 15 27/2 Does it help the already sadly befogged nomenclature of palatals to use the name ‘prepalatal’ for a palatal before e, i; medio-palatal for a palatal before a; post-palatal before o, u?
1902 E. W. Scripture Elements Exper. Phonetics xvii. 297 Roof articulations are indicated by the names..pre-, medio-, postpalatal.
1949 R.-M. S. Heffner Gen. Phonetics vi. 148 In Midwest American pronunciations of English there is an open r sound, which is formed by raising the middle region of the dorsum of the tongue towards the mediopalatal junction between the hard palate and velum.
1962 O. L. Chavarria-Aguila & H. Penzl in F. W. Householder & S. Saporta Probl. Lexicogr. iv. 241 A contrasting pair of voiced and voiceless medio-palatal fricatives occur.
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