1) Change of state 2) Chew 3) Chewing 4) Manduction 1) Chewing 2) Chomping 3) Food 4) Gumming 
Mastication or chewing is the process by which food is crushed and ground by teeth. It is the first step of digestion, and it increases the surface area of foods to allow more efficient break down by enzymes. During the mastication process, the food is positioned by the cheek and tongue between the teeth for grinding. The muscles of mastication mo...
• (n.) The act or operation of masticating; chewing, as of food.
(from the article `elastomer`) Mastication and softening are usually carried out in batches. The operation is done either in large, enclosed mixing machines or on rubber mills. The ... English inventor and manufacturer who founded the British rubber industry. His chief invention, the `masticator,` worked rubber scraps into a ....
chewing.
the process of preparing food for swallowing and digestion by chewing it.
The process of chewing food in preparation for swallowing and digestion. ... (12 Dec 1998) ... 
(mas″tĭ-ka´shәn) the process of biting and grinding with the teeth; called also chewing.
The act of chewing.
Mas`ti·ca'tion noun [ Latin masticatio : confer French mastication .] The act or operation of masticating; chewing, as of food. « Mastication is a necessary preparation of solid aliment, without which there can be no good digestion.» Arbuthnot. 
Chewing food.
Type: Term Pronunciation: mas′ti-kā′shŭn Definitions: 1. The process of chewing food in preparation for deglutition and digestion; the act of grinding or comminuting with the teeth.
(mas;tu1-ka;shun) The chewing of food.
The action of chewing.
Latin masticere = to chew.