In*ter"ca*late (?), v. t. [imp. & p. p. Intercalated (?); p. pr. & vb. n. Intercalating (?).] [L. intercalatus, p. p. of intercalare to intercalate to intercalate; inter between + calare to call, proclaim. See Calendar.]
To insert, as a day or other portion of time, in a calendar.
To insert among others, as a verse in a stanza; specif. Geol., 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.
© Webster 1913.