intercalation

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noun

A period inserted into a calendar as in a leap year.

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Meanings

nounintercalation (countable and uncountable, plural intercalations)

plural intercalations

  1. countableuncountableA period inserted into a calendar as in a leap year.
  2. countablephysicaluncountablechemistryThe reversible insertion of a molecule between two others.
  3. countableuncountablegeographyA layer introduced into a pre-existing sequence.

    Their exact relationship to the host-rock is obscure but from their texture and observed metamorphic relationship they are thought to be intrusive dykes rather than intercalations of more basic lava.

    1968, Transactions of the Geological Society of South Africa, page 148

Synonyms & antonyms

nounan insertion into a calendar

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Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Latinintercalō
  2. Englishintercalation

From Latin intercalō, from inter (“among”) + calō (“call out, proclaim”).

Full word history & related roots →

Translations

Bulgarian интеркалация
  • интеркалация (interkalacija)chemistry: the reversible insertion of a molecule between two others
German Einschaltung, Interkalation
  • Einschaltungperiod inserted into a calendar as in a leap year
  • Interkalationperiod inserted into a calendar as in a leap year
Hungarian interkaláció, szökőnap beszúrása/betoldása/közbeiktatása
  • interkalációperiod inserted into a calendar as in a leap year
  • szökőnap beszúrása/betoldása/közbeiktatásaperiod inserted into a calendar as in a leap year
  • interkalációchemistry: the reversible insertion of a molecule between two others
Polish interkalacja
  • interkalacjaperiod inserted into a calendar as in a leap year
Romanian intercalare
  • intercalareperiod inserted into a calendar as in a leap year
Russian интеркаляция
  • интеркаляция (interkaljacija)chemistry: the reversible insertion of a molecule between two others

Rhymes & wordplay

Anagrams

Cite this entry
APA

intercalation. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/intercalation

MLA

“intercalation.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/intercalation. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “intercalation,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/intercalation.

Source: intercalation on Wiktionary, CC BY-SA 4.0.