| 释义 |
preˈterm, a. and adv. Obstetrics.
A. adj. [pre- B. 2.] Born or occurring after a pregnancy that lasted significantly less than the normal time; spec. (see quot. 19772).
1928A. Gesell Infancy & Human Growth xv. 300 The pre-term child is viable even though he may have completed but three-quarters of his allotted uterine life-period. 1933,1971[see post-term a.]. 1977Lancet 11 June 1255/1 Cigarette smoking during pregnancy is associated with an increased proportion of pre-term deliveries. Ibid. 30 July 246/1 The terms ‘prematurity’ and ‘immaturity’, with their vague and multiple meanings, have been replaced by the precise terms ‘low birthweight’ (under 2500 g) and ‘preterm’ (less than 37 completed weeks).
B. adv. [pre- B. 2 c.] Before the end of the normal period of pregnancy.
1977Lancet 9 July 87/1 We gave pregnant Sprague-Dawley rats 4 mg/kg indomethacin..and killed the fetuses at cæsarean section shortly pre-term. |