intercalation

intercalation has 3 senses in the JumbleFix dictionary. Letters: 13.

Definitions

• n.. The insertion of a day, or other portion of time, in a calendar.
• n.. The insertion or introduction of anything among others, as the insertion of a phrase, line, or verse in a metrical composition; specif. (Geol.), the intrusion of a bed or layer between other layers.
• n.. an insertion into a calendar