In*ter`ca*la"tion (?), n. [L. intercalatio: cf. F. intercalation.]

1. Chron.

The insertion of a day, or other portion of time, in a calendar.


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.

Intercalations of fresh-water species in some localities. Mantell.


© Webster 1913.

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