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1. Produced without vibration of the vocal cords
   "surd consonants such as 'p' and 'k' and 's'";
   - unvoiced, voiceless, hard

1. A consonant produced without sound from the vocal cords
   - voiceless consonant
    
2. (mathematics) an irrational number; the root symbol

Derived forms: surds

See also: whispered

Type of: consonant

Encyclopedia: Surd