Answer: separablenesses

AnswerCrossword Clue
separablenessescapable of being separated, parted, or dissociated
separablenessesa. containing a countable dense subset b. (of a differential equation) capable of being written so that coefficients of the differentials of the independent and dependent variables are, respectively, functions of these variables alone
separablenessesSEPARABLENESS, SEPARABLE, that can be separated