embolism

noun

1. 1

   An obstruction or occlusion of an artery by an embolus, that is by a blood clot, air bubble or other matter that has been transported by the blood stream.

2. 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. 3

   An intercalated prayer for deliverance from evil coming after the Lord's Prayer.