The Coronal consonant reference article from the English Wikipedia on 24-Apr-2004
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Coronal consonant

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Coronals consontants are articulated with the tip or the front part of the tongue against the upper teeth, the upper gum (the alveolar ridge) or the part of the hard palate just behind it. The term covers a wide range of pronunciations, including dental, alveolar and postalveolar consonants.