Dictionary
in•ter•ca•la•tion
Pronunciation: (in-tûr"ku-lā'shun), [key]—
n.
1. the act of intercalating; insertion or interpolation, as in a series.
2. something that is intercalated; interpolation.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.