|sepə|rā.triks noun
( plural sepa·ratri·ces ˌsepəˈrā.trəˌsēz, -_rə.ˈtrī(ˌ)sēz ; also separatrixes )
Etymology: New Latin, from Late Latin, feminine of separator
1. : a diagonal or upright stroke used to separate one marginal proof correction from another in the same line
2. : diagonal 4