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Mastication is the act of chewing food — the whole process of breaking food with the teeth so it is ready to swallow. It is a noun, not a verb, though sometimes treat it like 'to masticate' because the sense line looks the same. You meet it in biology, dentistry, and health class, not in a café. Though actually, English has no common everyday noun that feels as natural as chew does as a verb; people just say chewing. Mastication is the tidy, scientific name for that chewing.
咀嚼；咀嚼作用（醫學、生理）
組成masticate (to chew) + -ion (turns the verb into the name of the act). From Late Latin.
同家族的字
- masticatethe verb this noun is built from
原始詞典資料2 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
masticationnoun/mæstɪˈkeɪʃən/
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medicinephysiologysciencesThe process of chewing.
- “It is no more blasphemous than that thing which is swiping our meat,” I replied, for whatever the thing was, it had leaped upon our deer and was devouring it in great mouthfuls which it swallowed without mastication. The creature appeared to be a great lizard at least ten feet high, with a huge, powerful tail as long as its torso, mighty hind legs and short forelegs.
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The process of crushing as though chewed.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。