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surd
Definitions
[səːd], (Adjective)
Definitions:
- (of a number) irrational
- (of a speech sound) uttered with the breath and not the voice (e.g. f, k, p, s, t)
Phrases:
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 dates from the mid 18th century
[səːd], (Noun)
Definitions:
- a surd number, especially the irrational root of an integer
- a surd consonant
Phrases:
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 dates from the mid 18th century
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definition by Oxford Dictionaries