Surd
/sɜːrd/noun
A mathematical term referring to a root that cannot be simplified to remove a radical symbol.
Did you know?The term 'surd' comes from a Latin word meaning 'deaf' or 'mute', reflecting the idea of something that cannot be expressed or simplified.
Etymological Timeline
Latin
Latin
surdus
“Deaf, mute, or unable to hear.”
Middle French
French
sourd
“Deaf or mute, lacking sound.”
17th Century
English
surd
“Mathematical term for irrational roots.”
Modern English
English
surd
“Referring to roots or expressions that cannot be simplified.”