Late Middle English (in an earlier sense). From post-classical Latin minoration-, minoratio lessening, deficiency from classical Latin minōrāt-, past participial stem of minōrāre + -iō.
Definition of minoration in US English:
minoration
nounˌmʌɪnəˈreɪʃn
Mathematics= minorization.
Origin
Late Middle English (in an earlier sense). From post-classical Latin minoration-, minoratio lessening, deficiency from classical Latin minōrāt-, past participial stem of minōrāre + -iō.