conceptualisation conceptualisation /ˌkɒnˌsɛptʃuːəˈleɪʃən/

noun

1. [British] Inventing or contriving an idea or explanation and formulating it mentally  ( conceptualisation [British] , conceptualization , formulation )
   inventing or contriving an idea or explanation and formulating it mentally
   
2. [British] An elaborated concept  ( conceptualisation [British] , conceptualization , conceptuality )
   an elaborated concept