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in·ter·ca·late

(ĭn-tûrkə-lāt′)

tr.v. in·ter·ca·lat·ed, in·ter·ca·lat·ing, in·ter·ca·lates

1. To insert (a day or month) in a calendar.

2. To insert, interpose, or interpolate.

[Latin intercalāre, intercalāt- : inter-, inter- + calāre, to proclaim; see kelə-² in the Appendix of Indo-European roots.]

in·ter′ca·lation n.

in·terca·la′tive adj.

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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