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surd

Upper-Intermediate (B2)

IPA: /sɜrd/

KK: /sɜrd/

adjective
Definition

A term used to describe a sound that is produced without vocal cord vibration, or something that lacks meaning or sense.


Example

The teacher explained that a surd is a voiceless sound in linguistics.


Conversation
Sloth A
I read that article you sent me, but some parts seemed really surd to me.
Sloth B
I know what you mean; some arguments just don't make any sense.
Sloth A
It's frustrating when people try to make a point that feels so surd.
Sloth B
Totally! It’s like they’re not even trying to be logical.

Synonyms & Antonyms
Synonyms
voiceless
unintelligible
incomprehensible
Antonyms
audible
intelligible
clear
noun
Definition

A type of number that cannot be expressed as a simple fraction, often represented as a root symbol, like the square root of 2.


Example

The square root of 2 is a surd because it cannot be simplified to a whole number.


Conversation
Sloth A
Did you know that the square root of two is a surd?
Sloth B
I’ve heard that term before, but I’m not sure what it means.
Sloth A
A surd is basically an irrational number that can’t be simplified further.
Sloth B
Root Explanation

Surd comes from the Latin word 'surdus' (meaning deaf or mute). The term refers to a number that cannot be expressed as a fraction, similar to how a deaf person cannot hear sounds.

Memory Tip

Think of 'surdus' meaning deaf, as a surd is a number that cannot be expressed in a simple way, just like a deaf person cannot hear clearly.

Visually Confused Words
urd
sur
sud
surbed
sturdy
soured
sigurd
scurdy
Is this page helpful?
Oh, that makes sense! Math can be so confusing sometimes.

Synonyms & Antonyms
Synonyms
irrational
root
sound
Antonyms
rational
whole
clear