n.
Pronunciation: ˌ th ə r-( ˌ )m ī - ' ä-niks
Function: noun plural but singular in construction
Date: 1909
: physics dealing with thermionic phenomena
n.
Pronunciation: ˌ th ə r-( ˌ )m ī - ' ä-niks
Function: noun plural but singular in construction
Date: 1909
: physics dealing with thermionic phenomena
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012