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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
    The Latin meaning of the word "Surd" is deaf or mute In earlier days, Arabian mathematicians called rational numbers and irrational numbers as audible and inaudible
  • SURD Definition Meaning - Merriam-Webster
    Both surd and its more common cousin absurd come from the Latin word surdus, meaning "unhearing, deaf, muffled, or dull " Absurd traveled through Middle French before arriving in English in the early 16th century
  • Surds in Maths: Definition, Laws, Types Solved Examples
    What Is Surds? A surd is defined as an irrational root that cannot be expressed exactly as a fraction or terminating repeating decimal For example, numbers like √2, √7, or ∛5 are all surds because their decimal expansions are non-terminating and non-recurring
  • Surds - An Introduction - Irrational Numbers and Rules - Laerd
    Well, 2 x 121 is 242 and we can take the square root of 121 without leaving a surd (because we get 11) Since we cannot take the square root of a larger number that can be multiplied by another to give 242 then we say that 121 is the largest perfect square factor
  • Surd - definition of surd by The Free Dictionary
    Define surd surd synonyms, surd pronunciation, surd translation, English dictionary definition of surd n 1 Mathematics An irrational number, such as √2 2 Linguistics A voiceless sound in speech adj Linguistics Voiceless, as a sound American Heritage®
  • surd - Wiktionary, the free dictionary
    Adjective surd (comparative more surd, superlative most surd) (obsolete) Lacking the sense of hearing; deaf
  • Introduction to Surds (examples, solutions, videos, worksheets, games . . .
    In mathematics, a surd is an irrational number that is expressed as a root (like a square root, cube root, etc ) of a rational number, where the root cannot be simplified to a whole number or a rational fraction
  • Surd Definition Meaning | YourDictionary
    An irrational number or quantity; specif , a root which can be expressed only approximately 5 is a surd
  • Surds - Xcelerate Math
    Surds What is a surd? When the square root of a number is a decimal number (and not a whole number), it is called a surd Examples of surds are: 2 = 1 4 3 = 1 7 5 = 2 2 6 = 2 4 7 = 2 6 What is NOT a surd? When a square root of a number is a whole number, it is not a surd Examples that are not surds are: 1 = 1 4 = 2 9 = 3





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