单词 | impacted |
释义 | impacted /im pak"tid/, adj. 1. tightly or immovably wedged in. 2. Dentistry. noting a tooth so confined in its socket as to be incapable of normal eruption. 3. driven together; tightly packed. 4. densely populated or crowded; overcrowded: an impacted school district. [1675-85; obs. impact adj. ( < L impactus ptp. of impingere to fasten, cause to collide, strike, equiv. to im- IM-1 + pag-, var. s. of pangere to drive in, plant firmly + -tus ptp. suffix) + -ED2; see IMPINGE] |
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