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单词
impaction
释义
WordReference Random House Unabridged Dictionary of American English © 2024
im•pac•tion
(im pak
′
shən),
USA pronunciation
n.
an act or instance of impacting.
the state of being impacted;
close fixation.
Dentistry
the condition in which a tooth is impacted.
Late Latin
impāctiōn-
(stem of
impāctiō
), equivalent. to Latin
impāct
(
us
), past participle of
impingere
(see
impacted
) +
-iōn-
-
ion
1730–40
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更新时间:2025/7/31 12:17:46