Word · Frequency #23509
exponential
指数的
of or involving exponents
- 1.
Expressed in terms of an exponent (power of a base), the base often being 10 or e.
用指数(基数的幂)表示的,基数常为10或e。
- 2.
Characterised by a rate of change that is proportional to the value of the varying quantity, or, equivalently, by a doubling or halving over successive fixed intervals of time or other parameter, described as exponential growth or exponential decay.
变化率与变化量成比例的,或等价地,在连续固定的时间或其他参数间隔内倍增或减半的,称为指数增长或指数衰减。
- 3.
Characterised by a very rapid rate of change, especially increase, or merely a very large amount or degree.
以极快的变化(尤指增长)为特征,或仅仅表示极大的数量或程度。
用指数(基数的幂)表示的,基数常为10或e。；变化率与变化量成比例的,或等价地,在连续固定的时间或其他参数间隔内倍增或减半的,称为指数增长或指数衰减。；以极快的变化(尤指增长)为特征,或仅仅表示极大的数量或程度。
In use
To solve this problem, we need to use the exponential function on the calculator.
The graph of an exponential equation rises quickly as the value of x increases.
Our teacher explained the difference between linear and exponential growth on the board.
adj. exponential + noun
exponential 作形容词时通常放在名词前，表示“指数级的”。
There has been exponential growth in online learning.
在线学习经历了指数级增长。
n. an exponential
exponential 作名词时为可数名词，复数形式是 exponentials。
An exponential is a function of the form f(x)=a^x.
指数函数是形如 f(x)=a^x 的函数。
Common mistakes
Connections
Collocations
- exponential growth
- 指数增长
- The city's population has shown exponential growth over the past decade.过去十年该市人口呈指数增长。
- exponential decay
- 指数衰减
- The amount of a radioactive substance follows exponential decay.放射性物质的量遵循指数衰减。
- exponential function
- 指数函数
- In class, we learned how to graph an exponential function.课上我们学习了如何绘制指数函数的图像。
- exponential distribution
- 指数分布
- The exponential distribution is often used to model waiting times.指数分布常用于模拟等待时间。
- exponential equation
- 指数方程
- We solved the exponential equation using logarithms.我们用对数解了这道指数方程。
Learner notes
Memory Tip
记忆联想：exponent 是“指数”，exponential 即“指数的”；指数增长成倍加速，如 2、4、8、16。
Context & Register
语域：mixed 常见场景：数学/科技、经济/商业、日常口语表达 该词多用于数学、经济学等正式语境，表示“指数的”或“指数函数”；也常见于日常表达中形容增长极快，此时带夸张色彩。整体语域偏正式但也较灵活，具体含义需结合搭配理解。
Pronunciation & Spelling
All six words rhyme with exponential: the stressed vowel /e/ is followed by /nʃəl/ (spelled -ential). Do not say /-entiəl/: the t+i is pronounced /ʃ/. Be careful with the lookalike 'exceptional' /ɪkˈsepʃənəl/, which has /pʃ/ instead of /nʃ/ and does not rhyme with this group.
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.