e-

英 [iː] 美 [iː]

• [前缀] 为 ex- 之变体

英英释义

名词 e:

1. a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body

2. a radioactive transuranic element produced by bombarding plutonium with neutrons

3. the cardinal compass point that is at 90 degrees

4. the base of the natural system of logarithms; approximately equal to 2.718282...

5. the 5th letter of the Roman alphabet