SURDS
Noun
surds
plural of surd
Anagrams
• DRUSS
Source: Wiktionary
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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