different between surd vs sudd

English

Etymology

Borrowed from Latin surdus (“deaf”); in mathematical sense, "deaf to reason", i.e. irrational.

Pronunciation

• (Received Pronunciation) enPR: sûd, IPA^(key): /s??d/
• (US) enPR: sûrd, IPA^(key): /s?d/
• Rhymes: -??(r)d

Noun

surd (plural surds)

1. (arithmetic) An irrational number, especially one expressed using the ? symbol.
2. (linguistics) A voiceless consonant.

Adjective

surd (comparative more surd, superlative most surd)

1. (obsolete) Lacking the sense of hearing; deaf.
   • 1670s, published 1716, Thomas Browne, Christian Morals, part 3, section 6:

     …how all Words fall to the Ground, spent upon such a surd and Earless Generation of Men, stupid unto all Instruction…

2. (obsolete) unheard
   • 1773, William Kenrick, A New Dictionary of the English Language, section 3, page 5:

     To this errour, of blending the ?urd and vocal modes of articulation together, may be added the too frequent u?e of compound articulations both vocal and ?urd.

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

   a surd expression or quantity; a surd number

4. (phonetics) unvoiced; voiceless

Related terms

• absurd

Anagrams

• RUDs, Ruds, UDRS, Urds, ruds

Aromanian

Alternative forms

• surdu, nsurdu

Etymology

From Latin surdus. Compare Romanian surd.

Adjective

surd m (feminine surde, plural surdz, feminine plural surdi)

1. deaf

Related terms

• surdzest

Romanian

Etymology

From Latin surdus, from Proto-Indo-European *swer- (“ringing, whistling”). Compare Aromanian surdu

Pronunciation

• IPA^(key): /surd/

Adjective

surd m or n (feminine singular surd?, masculine plural surzi, feminine and neuter plural surde)

1. deaf

Declension

Related terms

• asurzi
• surditate
• surzi

See also

• auzi
• mut
• orb

English

Etymology

Borrowed from Arabic ????? (sadd, “dam, barrier”).

Noun

sudd (plural sudds)

1. (Central Africa) A floating mass of plant matter, such as reeds, which obstructs the passage of boats.

Anagrams

• duds

Welsh

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Alternative forms

• sug

Pronunciation

• (North Wales) IPA^(key): /s??ð/
• (South Wales) IPA^(key): /si?ð/

Noun

sudd m (plural suddion, not mutable)

1. juice
2. sap

Derived terms

• sudd afal
• sudd ffrwyth
• sudd oren
• sudd tomato