SURDS

Noun

surds

plural of surd

Anagrams

• DRUSS

Source: Wiktionary

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SURD

Surd, a. Etym: [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.

2. Unheard. [Obs.] Kenrick.

3. (Math.)

Definition: Involving surds; not capable of being expressed in rational numbers; radical; irrational; as, a surd expression or quantity; a surd number.

4. (Phonetics)

Definition: 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.

Surd, n. (Math.)

1. A quantity which can not be expressed by rational numbers; thus, *2 is a surd.

2. (Phon.)

Definition: A surd element of speech. See Surd, a., 4.

Source: Webster’s Unabridged Dictionary 1913 Edition

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