WordReference Random House Unabridged Dictionary of American English © 2025
ex•po•nen•ti•a•tion
(ek′spō nen′shē ā′shən, -spə-),USA pronunciation n. [Math.]
- Mathematicsthe raising of a number to any given power.
- exponenti(al) + -ation, on model of substantiation, differentiation, etc. 1900–05