Authors: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Definition of Surd


  1. Net having the sense of hearing; deaf.
  2. Unheard.
  3. 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; unintonated; nonvocal; atonic; whispered; aspirated; sharp; hard, as f, p, s, etc.; -- opposed to sonant. See Guide to Pronunciation, //169, 179, 180.
  5. A quantity which can not be expressed by rational numbers.
  6. A surd element of speech. See Surd, a., 4.

Surd Translations

surd in German is irrational