breakdown
n.
"a collapse," 1832, from break, v. + down, adv.. The verbal phrase is attested from late 14c. The noun, specifically of machinery, is from 1838; meaning "an analysis in detail" is from 1936. Nervous breakdown is from 1905.
| 词汇 | breakdown | 
| 词根词缀 | Online Etymology Dictionary breakdown n. "a collapse," 1832, from break, v. + down, adv.. The verbal phrase is attested from late 14c. The noun, specifically of machinery, is from 1838; meaning "an analysis in detail" is from 1936. Nervous breakdown is from 1905. | 
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