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]

The Collaborative International Dictionary of English. 2000.


Look at other dictionaries:

  • surd — SURD, Ă, surzi, de, adj. 1. (Adesea substantivat) Care nu aude (bine), lipsit (total sau parţial) de auz. ♦ fig. Care nu vrea să audă, să înţeleagă; neînduplecat, nesimţitor, fără suflet. ♢ loc. adv. (Substantivat) De( a) surda = în zadar,… …   Dicționar Român

  • 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] …   The Collaborative International Dictionary of English

  • Surd — may be:* A voiceless consonant * An unresolved mathematical expression of an nth root, or an irrational number that can be expressed as such a root of a rational number * Surd, Hungary, a village in Zala county, Hungary * Surd evil is another… …   Wikipedia

  • surd — [sʉrd] adj. [L surdus, deaf, dull, mute: used to transl. Gr alogos, irrational, lit., without reason] 1. Math. IRRATIONAL 2. Phonet. VOICELESS (adj. 6) n 1. an irrational number or quantity; specif., a root which can be expressed only… …   English World dictionary

  • surd — 1550s, irrational (of numbers), from L. surdus unheard, silent, dull, possibly related to susurrus a muttering, whispering (see SUSURRATION (Cf. susurration)). The mathematical sense is from the use of L. surdus to translate Arabic (jadhr) asamm… …   Etymology dictionary

  • surd — ► NOUN 1) Mathematics a number which is not expressible as a ratio of two whole numbers. 2) Phonetics a speech sound uttered with the breath and not the voice (e.g. f, k, p). ORIGIN from Latin surdus deaf, mute …   English terms dictionary

  • surd — ab·surd·i·ty; ab·surd·ly; ab·surd·ness; ab·surd·ism; ab·surd; ab·surd·ist; surd; …   English syllables

  • surd — I. adjective Etymology: Latin surdus deaf, silent, stupid Date: 1610 1. lacking sense ; irrational < surd conceits of scripture s sense Thomas Jackson > 2. voiceless used of speech sounds II. noun …   New Collegiate Dictionary

  • surd — adj. & n. adj. 1 Math. (of a number) irrational. 2 Phonet. (of a sound) uttered with the breath and not the voice (e.g. f, k, p, s, t). n. 1 Math. a surd number, esp. the root of an integer. 2 Phonet. a surd sound. Etymology: L surdus deaf, mute …   Useful english dictionary

  • surd — /serrd/, adj. 1. Phonet. voiceless (opposed to sonant). 2. Math. (of a quantity) not capable of being expressed in rational numbers; irrational. n. 3. Phonet. a voiceless consonant (opposed to sonant). 4. Math. a surd quantity. [1545 55; < L… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”