• (a.) Unheard. • (a.) Net having the sense of hearing; deaf. • (a.) Involving surds; not capable of being expressed in rational numbers; radical; irrational; as, a surd expression or quantity; a surd number. • (n.) A surd element of speech. See Surd, a., 4. • (a.) Uttered, as an element of speech, without tone, or proper v...

Found on http://thinkexist.com/dictionary/meaning/surd/

(from the article `Incommensurables`) ...essentially mathematical and based on whole numbers. Of special relevance was the manipulation of ratios, which at first took place in accordance ...

Found on http://www.britannica.com/eb/a-z/s/189

1. Net having the sense of hearing; deaf. 'A surd . . . Generation.' ... 2. Unheard. ... 3. <mathematics> Involving surds; not capable of being expressed in rational numbers; radical; irrational; as, a surd expression or quantity; a surd number. ... 4. Uttered, as an element of speech, without tone, or proper vocal sound; voiceless; unintonat...

Found on http://www.encyclo.co.uk/local/20973

voiceless consonant *noun* a consonant produced without sound from the vocal cords

Found on https://www.encyclo.co.uk/local/20974

**Surd** * adjective* [ Latin

* surdus* deaf (whence the meaning, deaf to reason, irrational), perhaps akin to English

* swart* . Confer

__ Sordine__ .]

** 1.** Net having the sense of hearing; deaf. [ Obsolete] 'A

* surd* . . . generation.'

* Sir T. Browne.* ** 2.** Unheard. [ Obso...

Found on http://www.encyclo.co.uk/webster/S/249

**Surd** * noun* * (Math.)* ** 1.** A quantity which can not be expressed by rational numbers; thus, √2 is a

* surd* .

** 2.** * (Phon.)* A surd element of speech. See

__ Surd__ ,

* adjective* , 4.

Found on http://www.encyclo.co.uk/webster/S/249

a large surdo. Also called surdo terremoto ("earthquake") or surdo treme terra ("earth tremors").

Found on http://www.carnaval.com/bahia/glossary/

deaf; senseless

Found on http://phrontistery.info/s.html

In mathematics, expression containing the root of an irrational number that can never be exactly expressed – for example, √3 = 1.732050808... . √3 can be expressed in index notation as 3

^{1/2} or 3 to the power half. Simplifying surds (roots) Expressions involving surds can be factorized numerically to s...

Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0006743.html

irrational number

Found on http://phrontistery.info/s.html

Surd is an algebraic term to describe a quantity not expressible in rational numbers, such as the cube root of 3.

Found on http://www.probertencyclopaedia.com/browse/AS.HTM

Used in mathematics to describe an irrational quantity. See also: Irrational Number.

Found on http://www.diracdelta.co.uk/science/source/s/u/surd/source.html

[

*adj]* - (linguistics) of speech sounds 2. [n] - a consonant produced without sound from the vocal cords

Found on http://www.webdictionary.co.uk/definition.php?query=surd

**No exact match found**