phagism noun2 •A trophic pattern (one of monophagy, oligophagy, or polyphagy).The relation of the said groups of phagism to the life - forms of the plants they live on is shown in Table 9. — 1969 •(rare) A desire to eat that is not based on nutritional need.Precosmophobic phagism, or undifferentiated phagism, is phagism with no limits of space or time: the devouring mouth, as it were, unites the individual with the whole world for all time. — 1972