[binomial coefficient] n (ca. 1889): a coefficient of a term in the expansion of the binomial (x + y) to the exponent n according to the binomial theorem that for the (k + 1)st term consists of n! divided by (n - k)!k!
BINOMIAL COEFFICIENT
Meaning of BINOMIAL COEFFICIENT in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012