intercalate
UK /ɪnˈtɜː.kəl.eɪt/ · US /ɪnˈtɝ.kəˌleɪt/ verb, noun
Forms intercalates intercalating intercalated
- verb To insert an extra leap day into a calendar in order to maintain synchrony with natural phenomena.
- verb To insert an extra month into a calendar for the same purpose, such as for the Hebrew calendar.
- verb (molecular biology) To insert a substance between two or more molecules, bases, cells, or tissues.
- verb To insert anything somewhere (especially between other things), such as an affix into a word. (Compare interpolate.)
- noun (often used attributively) An atom or molecule, or a substance, that enters between the layers of the crystal lattice of another substance, especially that of graphite.
- noun A compound formed by foreign atoms or molecules entering between the layers of a crystal lattice, especially that of graphite.
Etymology
The verb is first attested in 1614, the noun in 1964; borrowed from Latin intercalātus, perfect passive participle of intercalō (“to proclaim that a day, an event, etc. has been intercalated; to insert”) (see -ate (verb-forming suffix) and -ate (noun-forming suffix)), from inter- (“between, among”) + calō (“to call; to proclaim”).
Webster’s 1913
- verb To insert, as a day or other portion of time, in a calendar.
- verb 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.
Etymology [L. intercalatus, p. p. of intercalare to intercalate to intercalate; inter between + calare to call, proclaim. See Calendar.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “intercalate”, CC BY-SA 4.0. Details