Sesquicentennial

//ˌsɛskwɪsɛnˈtɛni.əl// adj, noun

Definitions

Adjective
  1. 1
    Occurring every 150 years. not-comparable
  2. 2
    Of, or relating to a sesquicentenary. not-comparable
Noun
  1. 1
    A 150th anniversary.

    "The city celebrated its sesquicentennial last year."

  2. 2
    the 150th anniversary (or the celebration of it) wordnet

Etymology

Etymology 1

From sesqui- (“one-and-a-half”) + centennial (“of 100 years”). By surface analysis, sesqui- + cent- + -ennial.

Etymology 2

From sesqui- (“one-and-a-half”) + centennial (“of 100 years”). By surface analysis, sesqui- + cent- + -ennial.

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