Main Entry: in·ter·ca·la·ry

Pronunciation: \in-ˈtər-kə-ˌler-ē, ˌin-tər-ˈka-lə-rē\

Function: adjective

Etymology: Latin intercalarius, from intercalare

Date: 1614

1 a : inserted in a calendar <an intercalary day> b of a year : containing an intercalary period (as a day or month)
2 : inserted between other things or parts : interpolated