checkup
n.
also check-up, "careful examination," 1921, American English, from check, v. + up, adv., on notion of a checklist of things to be examined. The verbal phrase check up (on) is attested from 1889.
| 词汇 | checkup |
| 词根词缀 | Online Etymology Dictionary checkup n. also check-up, "careful examination," 1921, American English, from check, v. + up, adv., on notion of a checklist of things to be examined. The verbal phrase check up (on) is attested from 1889. |
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