Meaning of SURD in English

SURD

n.

Pronunciation: ' s ə rd

Function: adjective

Etymology: Latin surdus deaf, silent, stupid

Date: 1610

1 : lacking sense : IRRATIONAL < surd conceits of scripture's sense ― Thomas Jackson>

2 : VOICELESS ― used of speech sounds

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.