embolism

noun4

1. •
   An obstruction or occlusion of a blood vessel by an embolus, that is by a blood clot, air bubble or other matter that has been transported by the blood stream.
2. •
   The insertion or intercalation of days into the calendar in order to correct the error arising from the difference between the civil year and the solar year.
3. •
   An intercalated prayer for deliverance from evil coming after the Lord's Prayer.
4. •
   The variable body of a liturgical preface, between the protocol and eschatocol, typically stating the motive for worship on a given day.