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.
surface (third-person singular simple present surfaces, present participle surfacing, simple past and past participle surfaced) To provide something with a surface. To apply a surface to something. (intransitive) To rise to the surface. (intransitive) To come out of hiding. (intransitive) For information or facts to become known.