Dictionary
1. (
a.) Net having the sense of hearing; deaf.
2. (a.) Unheard.
3. (a.) Involving surds; not capable of being expressed in rational numbers; radical; irrational; as, a surd expression or quantity; a surd number.
4. (a.) 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, //169, 179, 180.
5. (n.) A quantity which can not be expressed by rational numbers; thus, 2 is a surd.
6. (n.) A surd element of speech. See Surd, a., 4.
Thesaurus
Gaussian integeraccentedalgebraic numberalgorismicalgorithmicaliquotallophonealveolarapicalapico-alveolarapico-dentalarticulatedarticulationaspirationassimilatedassimilationbackbarytonebilabialbroadcacuminalcardinalcardinal numbercentralcerebralcheckcheckedclosecomplex numberconsonantconsonantalcontinuantdeafdeaf and dumbdeaf-eareddeaf-mutedeafeneddecimaldefective numberdentaldifferentialdigitaldiphthongdissimilateddissimilationdorsaldull-earedearlessepenthetic voweleveneven numberexplosiveexponentialfiguralfiguratefigurativefinitefinite numberflatfractionfractionalfrontglideglossalglottalglottalizationgutturalhardhard of hearingheavyhighimaginaryimaginary numberimpairimpossibleinfiniteinfinityintegerintegralintonatedirrationalirrational numberlabiallabializationlabiodentallabiovelarlaryngeallaterallaxlightlingualliquidlogarithmiclogometriclowmanner of articulationmidmixed numbermodificationmonophthongmonophthongalmorphophonememutemutednarrownasalnasalizednegativenumeralnumerarynumerativenumericocclusiveoddopenordinaloxytonepairpalatalpalatalizedparasitic vowelpeakpharyngealpharyngealizationpharyngealizedphonephonemephonemicphoneticphonicpitchpitchedplosivepolygonal numberpositivepossibleposttonicprimeprime numberprothetic vowelpure imaginaryradicalrationalrational numberrealreal numberreciprocalrectangular numberretroflexround numberroundedsegmental phonemesemivowelserial numbersoftsonantsonorityspeech soundstone-deafstopstoppedstressedstrongstunnedsubmultiplesyllabicsyllabic nucleussyllabic peaksyllabletensethickthick of hearingthroatytonaltone-deaftonictranscendentaltranscendental numbertransfinite numbertransition soundtriphthongtwangyunaccentedunhearingunroundedunstressedvelarvocablevocalicvocoidvoicevoicedvoiced soundvoicelessvoiceless soundvoicingvowelvowellikeweakwhole numberwideword-deaf