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1

surd

play
adjective \ˈsərd\

Definition of surd

  1. 1 :  lacking sense :  irrational <surd conceits of scripture's sense — Thomas Jackson>

  2. 2 :  voiceless —used of speech sounds



Did You Know?

Both surd and its more common cousin absurd come from the Latin word surdus, meaning "unhearing, deaf, muffled, or dull." Absurd traveled through Middle French before arriving in English in the early 16th century. Its arrival preceded by a few decades the adoption of the noun version of our featured word directly from Latin, which referred to an irrational root, such as √3. By the early 17th century surd had gained a more general application. The adjective describes speech sounds that are not voiced-for example, the \p\ sound, as opposed to the voiced \b.

Origin of surd

Latin surdus deaf, silent, stupid


First Known Use: 1610

Rhymes with surd


2

surd

noun

Definition of surd

  1. 1a :  an irrational root (as √3)b :  irrational number

  2. 2 :  a surd speech sound



1557

First Known Use of surd

1557


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