ˌ ̷ ̷ ̷ ̷ˌ ̷ ̷ ̷ ̷ˈāshən noun
Etymology: Medieval Latin interlineat us (past participle) + English -ion
1. : the act of interlining
2. : something interlined
interlineations in a later hand
editorial interlineations
a printed form with typewritten interlineations — New York Times