adjective in·ter·ca·la·ry \in-ˈtər-kə-ˌler-ē, ˌin-tər-ˈka-lə-rē\

Definition of intercalary

  1. 1a :  inserted in a calendar <an intercalary day>b of a year :  containing an intercalary period (as a day or month)

  2. 2 :  inserted between other things or parts :  interpolated

Origin and Etymology of intercalary

Latin intercalarius, from intercalare

First Known Use: 1614

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