(ˌ)səˈmāshən noun
( -s )
Etymology: Medieval Latin summation-, summatio, from summatus (past participle of summare to sum) + Latin -ion-, -io -ion — more at sum
1. : the act or process of finding or forming a sum or total amount : addition — symbol Σ
2. : an aggregate formed especially by accumulation or accretion : sum total , resultant
3. : cumulative action or effect ; specifically : the process by which a sequence of stimuli that are individually inadequate to produce a response are cumulatively able to induce a nerve impulse
4. : summing-up
writes with shiny images, spare but eloquent summations of scenes and people — E.A.Davidson
specifically : a speech in court summing up the arguments in a case