Function: noun
Date: 1933
: an electric lamp that contains sodium vapor and electrodes between which a luminous discharge takes place and that is used especially for lighting highways
Function: noun
Date: 1933
: an electric lamp that contains sodium vapor and electrodes between which a luminous discharge takes place and that is used especially for lighting highways
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012