- of a day: extra day or days inserted into a calendar
- of a month: extra month inserted into a calendar. The w:Hebrew calendar, Hebrew calendar has such a month.
- (botany) of a meristem: situated between zones of permanent tissue, thus a shoot growing at the base of a leaf, in comparison with apical growth at the tip of a root or plant.
Etymology: intercalare to announce an extra day in the calendar.
- Spanish: intercalado
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