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Etymology

intercalated

/ɪnˈtɜːrkəleɪtɪd/

adjective

Origin

Latin

intercalare — to proclaim the insertion of an extra day or month

Overview

Meaning Now

  • Inserted into a calendar year or other sequence to correct or synchronize it.
  • Interposed or placed between other things.

Literal older meaning

proclaimed to be inserted between

Language path

Latin → English

Earliest form

intercalatus

Earliest period

16th century

Journey

The Roman calendar originally relied on a lunar cycle. Because the lunar year is shorter than the solar year, the pontiffs would 'intercalate' (proclaim the insertion of) an extra month to realign the calendar with the seasons. Julius Caesar eventually reformed this with the Julian calendar, making intercalation predictable rather than arbitrary.

Evolution

  1. Classical Latin

    intercalare

    “to insert into the calendar”

    Specifically referring to the Roman practice of inserting an extra month (Mercedonius).

  2. Late Latin

    intercalatus

    “inserted”

  3. 16th century English

    intercalated

    “inserted into a sequence”

    Adopted into technical and academic English.

Connections

Word parts

inter-

prefix

between

calare

root

to call or proclaim

-ated

ending

forming a past participle adjective

Related across languages

  • French

    intercaler

    to insert

  • Spanish

    intercalar

    to insert or intercalate

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