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surd    
a. 无理数的,不尽根的,清音的
n. 无理数,不尽根数,清音

无理数的,不尽根的,清音的无理数,不尽根数,清音

surd
adj 1: produced without vibration of the vocal cords; "unvoiced
consonants such as `p' and `k' and `s'" [synonym: {unvoiced},
{voiceless}, {surd}, {hard}] [ant: {soft}, {sonant},
{voiced}]
n 1: a consonant produced without sound from the vocal cords
[synonym: {surd}, {voiceless consonant}]

Surd \Surd\, n. (Math.)
1. A quantity which can not be expressed by rational numbers;
thus, [root]2 is a surd.
[1913 Webster]

2. (Phon.) A surd element of speech. See {Surd}, a., 4.
[1913 Webster]


Surd \Surd\, a. [L. surdus deaf (whence the meaning, deaf to
reason, irrational), perhaps akin to E. swart. Cf.
{Sordine}.]
1. Net having the sense of hearing; deaf. [Obs.] "A surd . .
. generation." --Sir T. Browne.
[1913 Webster]

2. Unheard. [Obs.] --Kenrick.
[1913 Webster]

3. (Math.) Involving surds; not capable of being expressed in
rational numbers; radical; irrational; as, a surd
expression or quantity; a surd number.
[1913 Webster]

4. (Phonetics) Uttered, as an element of speech, without
tone, or proper vocal sound; voiceless; unintonated;
nonvocal; atonic; whispered; aspirated; sharp; hard, as f,
p, s, etc.; -- opposed to sonant. See Guide to
Pronunciation, [sect][sect]169, 179, 180.
[1913 Webster]

202 Moby Thesaurus words for "surd":
Gaussian integer, accented, algebraic number, algorismic,
algorithmic, aliquot, allophone, alveolar, apical, apico-alveolar,
apico-dental, articulated, articulation, aspiration, assimilated,
assimilation, back, barytone, bilabial, broad, cacuminal, cardinal,
cardinal number, central, cerebral, check, checked, close,
complex number, consonant, consonantal, continuant, deaf,
deaf and dumb, deaf-eared, deaf-mute, deafened, decimal,
defective number, dental, differential, digital, diphthong,
dissimilated, dissimilation, dorsal, dull-eared, earless,
epenthetic vowel, even, even number, explosive, exponential,
figural, figurate, figurative, finite, finite number, flat,
fraction, fractional, front, glide, glossal, glottal,
glottalization, guttural, hard, hard of hearing, heavy, high,
imaginary, imaginary number, impair, impossible, infinite,
infinity, integer, integral, intonated, irrational,
irrational number, labial, labialization, labiodental, labiovelar,
laryngeal, lateral, lax, light, lingual, liquid, logarithmic,
logometric, low, manner of articulation, mid, mixed number,
modification, monophthong, monophthongal, morphophoneme, mute,
muted, narrow, nasal, nasalized, negative, numeral, numerary,
numerative, numeric, occlusive, odd, open, ordinal, oxytone, pair,
palatal, palatalized, parasitic vowel, peak, pharyngeal,
pharyngealization, pharyngealized, phone, phoneme, phonemic,
phonetic, phonic, pitch, pitched, plosive, polygonal number,
positive, possible, posttonic, prime, prime number,
prothetic vowel, pure imaginary, radical, rational,
rational number, real, real number, reciprocal, rectangular number,
retroflex, round number, rounded, segmental phoneme, semivowel,
serial number, soft, sonant, sonority, speech sound, stone-deaf,
stop, stopped, stressed, strong, stunned, submultiple, syllabic,
syllabic nucleus, syllabic peak, syllable, tense, thick,
thick of hearing, throaty, tonal, tone-deaf, tonic, transcendental,
transcendental number, transfinite number, transition sound,
triphthong, twangy, unaccented, unhearing, unrounded, unstressed,
velar, vocable, vocalic, vocoid, voice, voiced, voiced sound,
voiceless, voiceless sound, voicing, vowel, vowellike, weak,
whole number, wide, word-deaf


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  • Surds - Math is Fun
    When we can't simplify a number to remove a square root (or cube root etc) then it is a surd Have a look at these examples (including cube
  • Surds and Indices - Definition, Types, Rules, and Practice . . . - Cuemath
    Surd is simply used to refer to a number that does not have a root √4 4, 3√8 8 3, √25 2 5 have roots as answers But √6 6, 3√2 2 3, √20 2 0 do not have proper roots These number forms are termed as surds Also, these surds example expressed in exponential form would have fractions as powers √6 = 61 2 3√2 = 21 3 6 = 6 1 2 2 3
  • Surd - Wikipedia
    Mathematics Surd (mathematics), an unresolved root or sum of roots Radical symbol, the notation for a root formerly, an irrational number in general
  • Surds Definition - BYJUS
    In other words, a surd is a root of the whole number that has an irrational value Consider an example, √2 ≈ 1 414213 It is more accurate if we leave it as a surd √2 Types of Surds The different types of surds are as follows: Simple Surds – A surd that has only one term is called a simple surd Example: √2, √5, …
  • Surds: Definition, Rules, Types, and Solved Examples
    A root of a positive real number is called a surd if we cannot remove the root symbol after simplification Examples of surds: Note that we cannot remove the root symbol from 2, 3; so by definition they are surds
  • SURD Definition Meaning - Merriam-Webster
    The meaning of SURD is lacking sense : irrational How to use surd in a sentence Surd and Absurd
  • Surd|Definition Meaning - The Story of Mathematics
    A surd is any number whose nth root (square root, cube root, etc ) cannot be simplified so as to remove the radical sign
  • What are Surds? - GeeksforGeeks
    In simple terms, Surd is a mathematical term for an irrational number that can be expressed as the root of an integer Most commonly, surds are used to refer to square roots of non-perfect squares, such as \ (\sqrt {2}\), \ (\sqrt {3}\), or \ (\sqrt {5}\), but they can also include higher roots like cube roots (\ (\sqrt [3] {7}\)) when these
  • How to Simplify Surds – mathsathome. com
    To simplify surds using addition and subtraction, first fully simplify each individual surd Then only add and subtract surds that have the same number under the root
  • Surds - Introduction, Types, Rules, Properties, Solved . . . - Vedantu
    Surd is a positive real number under the square root even after the simplification Surds give students a platform to use their knowledge of algebra to solve sums, and its theories and rules help them in higher classes to solve complex trigonometry, integration





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