intromission

The story

1. Latin · derived fromintrōmissus“sent in, introduced, let in, admitted”
2. Medieval Latin · borrowed fromintrōmissiō, intrōmissiōn-“introduction, admission; usurpation”
3. English todayintromission

From Medieval Latin intrōmissiō, intrōmissiōn- (“introduction, admission; usurpation”), intro- (“into”) + missiō (“sending”), from Latin intrōmissus (“sent in, introduced, let in, admitted”), perfect passive participle of intrōmittō (“send in, let in”).