1. To insert, as a day or other portion of time, in a calendar.

2. To insert among others, as a verse in a stanza; specif.

<geology> To introduce as a bed or stratum, between the layers of a regular series of rocks. "Beds of fresh water shells . . . Are intercalated and interstratified with the shale." (Mantell)

Origin: L. Intercalatus, p. P. Of intercalare to intercalate to intercalate; inter between + calare to call, proclaim. See Calendar.

(01 Mar 1998)