Is “Surd” a Scrabble word?
Yes
SURD
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Surd
/sɜːd/
noun
1.An irrational number, especially one expressed using the √ symbol.
2.A voiceless consonant.
adjective
1.Lacking the sense of hearing; deaf.
2.Unheard
3.Involving surds, or irrational numbers; not capable of being expressed in rational numbers.
“a surd expression or quantity; a surd number”