SURD

unvoiced, voiceless, surd, hard

(adjective) produced without vibration of the vocal cords; “unvoiced consonants such as ‘p’ and ‘k’ and ‘s’”

surd, voiceless consonant

(noun) a consonant produced without sound from the vocal cords

Source: WordNet® 3.1


Etymology

Noun

surd (plural surds)

(arithmetic) An irrational number, especially one expressed using the √ symbol.

(linguistics) A voiceless consonant.

Adjective

surd (comparative more surd, superlative most surd)

(obsolete) Lacking the sense of hearing; deaf.

(obsolete) unheard

(math) Involving surds, or irrational numbers; not capable of being expressed in rational numbers.

(phonetics) unvoiced; voiceless

Anagrams

• RUDs, Ruds, UDRS, Urds, ruds

Source: Wiktionary


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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Word of the Day

10 June 2025

COMMUNICATIONS

(noun) the discipline that studies the principles of transmiting information and the methods by which it is delivered (as print or radio or television etc.); “communications is his major field of study”


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Coffee Trivia

There are more than 50 countries that export coffee. They are near the equator, where the climate is conducive to producing coffee beans.

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