intercalation

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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- in Indo-European roots.]

in·ter′ca·la′tion n.
in·ter′ca·la′tive adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.intercalation - an insertion into a calendar
calendar - a system of timekeeping that defines the beginning and length and divisions of the year
interval, time interval - a definite length of time marked off by two instants
Translations

intercalation

[ɪnˌtɜːkəˈleɪʃən] Nintercalación f
References in periodicals archive ?
Although this was below growth achieved in January, year-to-year comparisons are distorted because February 2016 was a leap month.
The 11-day difference is accounted for by adding a lunar leap month of about 29 days every two or three years.
They believe that children born in a leap month are harder to bring up.