metamathematics
noun
meta·math·e·mat·ics ˈme-tə-ˌmath-ˈma-tiks 
-ma-thə-
plural in form but usually singular in construction
: a field of study concerned with the formal structure and properties (such as the consistency and completeness of axioms) of mathematical systems
metamathematical
ˈme-tə-ˌmath-ˈma-ti-kəl
adjective 
Word History
First Known Use
circa 1890, in the meaning defined above
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