productivity
n.
1809, "quality of being productive," from productive + -ity. An earlier word for this was productiveness (1727). Economic sense of "rate of output per unit" is from 1899.
| 词汇 | productivity |
| 词根词缀 | Online Etymology Dictionary productivity n. 1809, "quality of being productive," from productive + -ity. An earlier word for this was productiveness (1727). Economic sense of "rate of output per unit" is from 1899. |
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