Definition of surd in English:

surd

adjective səːdsərd

1Mathematics
(of a number) irrational.
〔数〕不尽根的
2Phonetics
(of a speech sound) uttered with the breath and not the voice (e.g. f, k, p, s, t).
〔语音〕清音的（如f，k，p，s，t）

noun səːdsərd

1Mathematics
A surd number, especially the irrational root of an integer.
〔数〕不尽根（尤指整数的不尽根）
Example sentencesExamples
- In the conventional school education in India, we are asked to do some problems involving surds (radicals).
- They were learning about surds in maths, supposedly one of the hardest subjects.
- I don't care about rationalising denominators with surds in them, and I don't care that by using maths induction you can prove many equations to be right or wrong.
2Phonetics
A surd consonant.
〔语音〕清音

Origin

Mid 16th century: from Latin surdus 'deaf, mute'; as a mathematical term, translating Greek (Euclid) alogos 'irrational, speechless', apparently via Arabic jiḏr aṣamm, literally 'deaf root'. sense 2 of the adjective dates from the mid 18th century.

Definition of surd in US English:

surd

adjectivesərdsərd

1Mathematics
(of a number) irrational.
〔数〕不尽根的
2Phonetics
(of a speech sound) uttered with the breath and not the voice (e.g. f, k, p, s, t).
〔语音〕清音的（如f，k，p，s，t）

nounsərdsərd

1Mathematics
A surd number, especially the irrational root of an integer.
〔数〕不尽根（尤指整数的不尽根）
Example sentencesExamples
- I don't care about rationalising denominators with surds in them, and I don't care that by using maths induction you can prove many equations to be right or wrong.
- They were learning about surds in maths, supposedly one of the hardest subjects.
- In the conventional school education in India, we are asked to do some problems involving surds (radicals).
2Phonetics
A surd consonant.
〔语音〕清音

Origin

Mid 16th century: from Latin surdus ‘deaf, mute’; as a mathematical term, translating Greek (Euclid) alogos ‘irrational, speechless’, apparently via Arabic jiḏr aṣamm, literally ‘deaf root’. surd (sense 2 of the adjective) dates from the mid 18th century.

词汇	surd
释义	Definition of surd in English: surd adjective səːdsərd 1Mathematics (of a number) irrational. 〔数〕不尽根的 2Phonetics (of a speech sound) uttered with the breath and not the voice (e.g. f, k, p, s, t). 〔语音〕清音的（如f，k，p，s，t） noun səːdsərd 1Mathematics A surd number, especially the irrational root of an integer. 〔数〕不尽根（尤指整数的不尽根） Example sentencesExamples In the conventional school education in India, we are asked to do some problems involving surds (radicals). They were learning about surds in maths, supposedly one of the hardest subjects. I don't care about rationalising denominators with surds in them, and I don't care that by using maths induction you can prove many equations to be right or wrong. 2Phonetics A surd consonant. 〔语音〕清音 Origin Mid 16th century: from Latin surdus 'deaf, mute'; as a mathematical term, translating Greek (Euclid) alogos 'irrational, speechless', apparently via Arabic jiḏr aṣamm, literally 'deaf root'. sense 2 of the adjective dates from the mid 18th century. Definition of surd in US English: surd adjectivesərdsərd 1Mathematics (of a number) irrational. 〔数〕不尽根的 2Phonetics (of a speech sound) uttered with the breath and not the voice (e.g. f, k, p, s, t). 〔语音〕清音的（如f，k，p，s，t） nounsərdsərd 1Mathematics A surd number, especially the irrational root of an integer. 〔数〕不尽根（尤指整数的不尽根） Example sentencesExamples I don't care about rationalising denominators with surds in them, and I don't care that by using maths induction you can prove many equations to be right or wrong. They were learning about surds in maths, supposedly one of the hardest subjects. In the conventional school education in India, we are asked to do some problems involving surds (radicals). 2Phonetics A surd consonant. 〔语音〕清音 Origin Mid 16th century: from Latin surdus ‘deaf, mute’; as a mathematical term, translating Greek (Euclid) alogos ‘irrational, speechless’, apparently via Arabic jiḏr aṣamm, literally ‘deaf root’. surd (sense 2 of the adjective) dates from the mid 18th century.
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