1560s, from L. masticationem (nom. masticatio), from masticare "to chew" (cf. O.Fr. maschier, Fr. mâcher), probably from Gk. mastikhan "to gnash the teeth," related to mastax "mouth, jaws," and masasthai "to chew," from PIE *menth- "to chew, mouth" (cf. L. mandere "to chew," Goth. munþs,
O.E. muð "mouth").
masticate
1640s, from L.L. masticat-, pp. stem of masticare (see mastication). Related: Masticated; masticating.