[Fou.ri.er series] n [Baron J.B.J. Fourier] (1877): an infinite series in which the terms are constants multiplied by sine or cosine functions of integer multiples of the variable and which is used in the analysis of periodic functions
FOURIER SERIES
Meaning of FOURIER SERIES in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012