1
- conforming to a standard; usual, typical, or expected正常的; 标准的; 常见的, 典型的：
it's quite normal for puppies to bolt their food
小狗囫囵吞吃食物是很常见的
normal working hours.
常规工作时间。
1.1
- (of a person) free from physical or mental disorders（人）正常的。
2
- technical (of a line, ray, or other linear feature) intersecting a given line or surface at right angles〈技〉（线或线性特征）正交的, 垂直的。
3
- Medicine (of a salt solution) containing the same salt concentration as the blood【药】（盐溶液）与血液的盐浓度相同的。
3.1
- Chemistry dated (of a solution) containing one gram-equivalent of solute per litre【化】〈旧〉（溶液）当量（浓度）的。
4
- Geology denoting a fault or faulting in which a relative downward movement occurred in the strata situated on the upper side of the fault plane【地质】正（断层）的。
1
- mass noun the usual, average, or typical state or condition正常状态; 平均状态; 典型：
her temperature was above normal
她的体温超过正常温度
the service will be back to normal next week.
这项服务下周就会恢复正常。
1.1
- informal a person who is conventional or healthy〈非正式〉循规蹈矩者, 墨守成规的人; 健康的人, 正常人。
2
- count noun technical a line at right angles to a given line or surface〈技〉法线; 正交。
派生词
normalcy
noun chiefly N Amer . 〈主北美〉normality
noun词源
mid 17th cent. （in the sense 'right-angled'）： from Latin normalis, from norma 'carpenter's square' （see NORM）. Current senses date from the early 19th cent.