fluxionary
/ˌflʌksɪˈɒnri/ or /ˌflʌksiˈɒnri/Definitions
1. noun
relating to or given to fluxions, which are rates of change in calculus
“The mathematician’s work in fluxionary calculus was groundbreaking in its time.”
2. adjective
characterized by or given to fluxions
“The complex algebraic expression was fluxionary in nature.”