Noun
summand (plural summands)
Something which is added or summed.
In the expression 1+2=3, the summands are 1 and 2.
A submodule N of M is a direct summand of M if there exists some other submodule N′ of M such that M is the internal direct sum of N and N′. Source: Internet
This leads to the error evaluator polynomial : Thanks to we have : Thanks to (the Lagrange interpolation trick) the sum degenerates to only one summand for : To get we just should get rid of the product. Source: Internet