subtilization

noun

sub·​til·​iza·​tion

variants also British subtilisation

ˌsətᵊlə̇ˈzāshən, 

ˌsə(b)tᵊl-, 

ˌsəbtə̇l-, 

-ᵊlˌīˈz-, 

-ə̇ˌlīˈz-

plural -s

: an act or instance or the practice of subtilizing : subtlety

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