palato-alveolar: pronounced with the blade of the tongue (the part immediately behind the tip) on or near the roof of the mouth slightly behind the alveolar ridge. (See the diagram of places of articulation.) For some palato-alveolar sounds, the tip is also in contact with the alveolar ridge, but what is important in defining these sounds is the involvement of the region behind the alveolar ridge. The sh [š] and ch [tš] sounds are palato-alveolar. Sometimes the term alveopalatal has been used instead of "palato-alveolar", especially by linguists in the Americas. For some linguists alveopalatal sounds are more fully apical (pronounced with the tongue tip) whereas palato-alveolars are pronounced with the blade of the tongue. See place of articulation. [Spanish: palato-alveolar]