Grattage. a method of drawing by scratching paper or cardboard that has been covered with india ink with a pen or a sharp instrument. The grattage process is reminiscent of scraping an oiled surface in lithography.rattage. a method of drawing by scratching paper or cardboard that has been covered with india ink with a pen or a sharp instrument. The grattage process is reminiscent of scraping an oiled surface in lithography.
3. (Zoology) of or relating to the surface of an animal, such as a jellyfish, on which the mouth is situated. 4. (Medicine) denoting a drug to be taken by mouth Compare parenteral: an oral contraceptive.
1666 Overview of the Oral Mucosa The oral cavity covers the cheek, lips, tongue, hard palate, soft palate and floor of the mouth (Fig-1). The lining of the oral cavity is referred to as the oral mucosa. Numerous mucous or serous glands are seen in the sub mucous tissue of the cheeks.The buccal, sublingual and the mucosal tissues on the ventral surface of the tongue covers for about 60% of the oral mucosal surface area.666 Overview of the Oral Mucosa The oral cavity covers the cheek, lips, tongue, hard palate, soft palate and floor of the mouth (Fig-1). The lining of the oral cavity is referred to as the oral mucosa. Numerous mucous or serous glands are seen in the sub mucous tissue of the cheeks.