Word · Frequency #8842
reciprocal
倒数；乘法逆元
A number related to another in such a way that their product is 1; for a fraction, the result of swapping its numerator and denominator.
- 1.
The number obtained by dividing 1 by another given number; the result of exchanging the numerator and the denominator of a fraction.
用1除以另一个给定数所得的数；分数分子分母互换的结果。
- 2.
something (a term or expression or concept) that has a reciprocal relation to something else
与其他事物具有互惠关系的事物(术语、表达或概念)
- 3.
A construction expressing mutual action.
表示相互动作的结构。
- 4.
(mathematics) one of a pair of numbers whose product is 1: the reciprocal of 2/3 is 3/2; the multiplicative inverse of 7 is 1/7
(数学)一对乘积为1的数字中的一个:2/3的倒数是3/2；7的乘法逆元是1/7
- 5.
hybridization involving a pair of crosses that reverse the sexes associated with each genotype
涉及一对交配的杂交,反转与每种基因型相关的性别
互惠的事物；相互对应的事物；相互结构；互指结构；正反交；用1除以另一个给定数所得的数；分数分子分母互换的结果。；与其他事物具有互惠关系的事物(术语、表达或概念)
In use
In mathematics, the reciprocal of 3 is 1/3.
Their friendship is built on a reciprocal of trust and support.
The new agreement provides a reciprocal of benefits for both companies.
risk is the reciprocal of safety
the reciprocal of [number]
用于数学语境，表示一个数的乘法逆元。
The reciprocal of 2/3 is 3/2.
2/3 的倒数是 3/2。
a reciprocal of [something]
表示两个事物之间存在相互或互惠关系。
Trust is a reciprocal of respect.
信任是尊重的互惠结果。
a reciprocal cross
遗传学实验中的一种杂交方式，交换父母性别。
Connections
Collocations
- reciprocal of a number
- 一个数的倒数
- The reciprocal of 0.5 is 2.0.5的倒数是2。
- reciprocal of a fraction
- 一个分数的倒数
- To divide by 2/3, multiply by its reciprocal, 3/2.要除以2/3，乘以其倒数3/2。
- find the reciprocal
- 求倒数
- Find the reciprocal of 7.求7的倒数。
- reciprocal cross
- 反交（涉及性别反转的杂交）
- The reciprocal cross showed different inheritance patterns.反交显示出不同的遗传模式。
- reciprocal relationship
- 互惠关系
- Their business is built on a reciprocal relationship.他们的业务建立在互惠关系上。
- the reciprocal of something
Learner notes
Memory Tip
想象两人互相交换礼物：你送我一个，我回送你一个——这就是reciprocal（互惠关系）。数学上，2/3的倒数是3/2，互相颠倒且乘积为1，也是reciprocal。
Context & Register
语域：mixed 常见场景：数学、生物学、一般互惠关系 该词在不同专业领域（数学、生物学）和一般互惠关系中使用，语域通常偏正式或中性，因此标记为混合语域。
Grammar Note
复数形式reciprocals；可指数对中的一个或互惠关系的事物。
Pronunciation & Spelling
These words all end in the suffix '-cal', pronounced /kəl/. However, the stressed vowel and preceding consonants differ, so they do not rhyme with each other or with 'reciprocal'.
Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
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, WORDNET.