What is the meaning of Intercalate?

To insert an extra leap day into a calendar in order to maintain synchrony with natural phenomena.

To insert an extra month into a calendar for the same purpose, such as for the Hebrew calendar.

To insert a substance between two or more molecules, bases, cells, or tissues.

To insert anything somewhere (especially between other things), such as an affix into a word.

An atom or molecule, or a substance, that enters between the layers of the crystal lattice of another substance, especially that of graphite.

A compound formed by foreign atoms or molecules entering between the layers of a crystal lattice, especially that of graphite.

inflection of intercalare:

1. second-person plural present indicative
2. second-person plural imperative

second-person plural present indicative

second-person plural imperative

feminine plural of intercalato

second-person plural present active imperative of intercalō

second-person singular voseo imperative of intercalar combined with te

Source: wiktionary.org