intercalation

[ in-tur-kuh-ley-shuh n ]
/ ɪnˌtɜr kəˈleɪ ʃən /

noun

the act of intercalating; insertion or interpolation, as in a series.
something that is intercalated; interpolation.

Origin of intercalation

First recorded in 1570–80, intercalation is from the Latin word intercalātiōn- (stem of intercalātiō). See intercalate, -ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for intercalation