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.
(ËdÉËsÉl) adj. 1. (Anatomy) anatomy zoology relating to the back or spinal part of the body. Compare ventral1. 2. (Botany) botany of, relating to, or situated on the side of an organ that is directed away from the axis. 3. (Phonetics & Phonology) articulated with the back of the tongue, as the (k) sound in English coot.