Learn how to say Intercalator correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word intercalate:
1insert (an intercalary period) in a calendar:
a system was introduced to intercalate an extra month in the calendar
2insert (something) between layers in a crystal lattice, geological formation, or other structure:
(as adjective intercalated)
the interlayer spaces of the graphite host lattice are filled with intercalated layers
early 17th century: from Latin intercalat- ‘proclaimed as inserted in the calendar’, from the verb intercalare, from inter- ‘between’ + calare ‘proclaim solemnly’