[ ɪn'tə:kəl(ə)ri , ˌɪntə'kal(ə)ri ]
■ adjective
1》 (of a day or month) inserted in the calendar to harmonize it with the solar year, e.g. 29 February.
2》 (of an academic period) additional to the standard course and taken at a different institution.
3》 Botany denoting meristem tissue located between its daughter cells.
Origin
C17: from L. intercalarius , from intercalare (see intercalate ).